2016.20 JCV

 

Someone had posted that they got the large JCV file. I wonder how?

To my 855 the 24,*** kb file was supplied.
For my 2797 I got the 494,*** kb file.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.
Page 1>>

Full coverage JCV

Garmin is still providing the full screen full coverage JCV file with the 7x5 series nuvi and probably with the zumo 6xx.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

775T

Yes, my 775T got the large JCV.

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

Nuvi 765T - 2797LMT

My 765T got the large file as well, my 2797 got the 492 meg file

--
(formerly known as condump) RV 770 LMT-S, Nuvi2797LMT, Nuvi765T

And

Gastx wrote:

My 765T got the large file as well, my 2797 got the 492 meg file

And just so folks are clear, those 2 files have exactly the same number of views. The 765 has full screen view pictures so the file is almost twice the size of the file you got for the 2797 as it has split screen views which are about half the size of a full screen view.

--
Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Backup Camera 40 and TomTom XXL540s.

2016.20 JCV

Well my 2797 got the 294***kb file and what I am missing now are the overhead signs on a freeway which used to show up when I had the larger JCV file. I now have a split screen with less info.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Found this info on GPS Review

I found this info in the GPS Review forum website. As of a few minutes ago the download for the large JCV file as suggested in the posting has not worked for me. But maybe in the near future it may. I copied and pasted the info here.
------------------------------------

•sussamb 2014
http://download.garmin.com/support/2015_30/NA/JV/D3060160A.J...

• t923347
November 2014 edited November 2014
The keys to finding the Full Screen Large JCV file are in 2 fields of the URL posted by sussamb above. The first field is the map version number (2015_30 in this case) and the second field is the file name for the JCV file (the 9 character.JCV name at the end of the link).

If Garmin doesn't change the location and file naming convention in the future, the large JCV file for:

2015.40 - will be found at http://download.garmin.com/support/2015_40/NA/JV/D3060170A.J...

2016.10 - will be found at http://download.garmin.com/support/2016_10/NA/JV/D3060180A.J...

2016.20 - will be found at http://download.garmin.com/support/2016_20/NA/JV/D3060190A.J...

So the key to getting this file is to replace the map update version number with the number that matches the version of the maps you have downloaded and to add 10 to the 2 digits to the left of the A in the file name from the previous version number.

For the past few map updates, Garmin has made the new Full Screen Large JCV file available either the day that a new map update was released or the following day. If you enter the URL for the next map update and it isn't available yet you will receive a "file not found" message. Once the file is available, entering the URL will begin the download process.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Three thoughts (or more)

Melaqueman wrote:

I found this info in the GPS Review forum website. As of a few minutes ago the download for the large JCV file as suggested in the posting has not worked for me. But maybe in the near future it may. I copied and pasted the info here.
------------------------------------

•sussamb 2014
http://download.garmin.com/support/2015_30/NA/JV/D3060160A.J...

• t923347
November 2014 edited November 2014
The keys to finding the Full Screen Large JCV file are in 2 fields of the URL posted by sussamb above. The first field is the map version number (2015_30 in this case) and the second field is the file name for the JCV file (the 9 character.JCV name at the end of the link).

If Garmin doesn't change the location and file naming convention in the future, the large JCV file for:

2015.40 - will be found at http://download.garmin.com/support/2015_40/NA/JV/D3060170A.J...

2016.10 - will be found at http://download.garmin.com/support/2016_10/NA/JV/D3060180A.J...

2016.20 - will be found at http://download.garmin.com/support/2016_20/NA/JV/D3060190A.J...

So the key to getting this file is to replace the map update version number with the number that matches the version of the maps you have downloaded and to add 10 to the 2 digits to the left of the A in the file name from the previous version number.

For the past few map updates, Garmin has made the new Full Screen Large JCV file available either the day that a new map update was released or the following day. If you enter the URL for the next map update and it isn't available yet you will receive a "file not found" message. Once the file is available, entering the URL will begin the download process.

1) The GPS Review faq sounds ominously like our t92's FAQ. I hope it wasn't stolen and reposted but rather was offered by t92 to these other sites. t92's FAQ here:

http://www.poi-factory.com/node/42659

2) For the past 2 map updates, Garmin has not offered the large JCV file as done for a couple or so years earlier and the consensus here is that Garmin won't be offering it anymore, so I urge you not to hold your breath waiting for it. The FAQ you quote was probably written more than six months to a year ago when Garmin was offering the large JCV file. The last time Garmin offered the large JCV file was with the 2015.30 map update.

Melaqueman, to get the large JCV file, what has been offered when it's not offered by Garmin is someone offering the file either on their personal Dropbox or similar account, or on web sites offering pirated map files. I have a nuvi 855 and would love the large JCV file but I won't go to a pirate site to get the file.

3) From your earlier post:

Well my 2797 got the 294***kb file and what I am missing now are the overhead signs on a freeway which used to show up when I had the larger JCV file. I now have a split screen with less info.

Like you, I also think that my nuvi 2460 does not offer the same number of Junction Views with its default split screen JCV file as my 3597 does offer with its split screen JCV file—and your 2797 may have a similar result with its JCV file offering fewer JVs than are offered on other models (the 3597 and quite likely, the large full-screen JCV file). We are bucking the current thinking here at The Factory by stating that not all split screen JCV files offer the same number of JV locations and I therefore ask for others to add to the discussion. The best comparisons will come from folks with two or more nuvi models who can simultaneously run a real or simulated route with both devices, then compare the number of JVs shown.

.

CraigW wrote:

1) The GPS Review faq sounds ominously like our t92's FAQ. I hope it wasn't stolen and reposted but rather was offered by t92 to these other sites.

Just an FYI, t923347 has been an active member (as I have been) at GPS Review for at least five years now. I'm sure he supplied info there for the FAQ by his own will.

Still, I've written numerous articles & FAQs (not just GPS related) and sometimes see them pop up as a post or otherwise, with no credit given. It's like the poster came up with the solution/article/workaround/whatever himself! grin I really don't think there's much we can do about this kind of thing. As long as it helps others, I really don't have too much issue with it.

--
nuvi 760, nuvi 765T, nuvi 855, nuvi 3790LMT, nuvi 3490LMT - SoCal area

Knowledge learned is knowledge owned.

But that said, I always try to give credit to those I learned from, and especially whenever I quote directly. I agree with DorkusNimrod, that in this case, our friend t923347 probably posted the same information in both forums. It is a common practice. I do it myself quite often.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

Thanks

t923347 wrote:
Gastx wrote:

My 765T got the large file as well, my 2797 got the 492 meg file

And just so folks are clear, those 2 files have exactly the same number of views. The 765 has full screen view pictures so the file is almost twice the size of the file you got for the 2797 as it has split screen views which are about half the size of a full screen view.

I should have mentioned that in my post.

--
(formerly known as condump) RV 770 LMT-S, Nuvi2797LMT, Nuvi765T

You're right

Melaqueman wrote:

I found this info in the GPS Review forum website. As of a few minutes ago the download for the large JCV file as suggested in the posting has not worked for me. But maybe in the near future it may...

I downloaded that file without any problems; and sure enough it was the EXACT file that was available last November.

Phil

--
Phil in Mentor, Ohio -- Garmin Nuvi 1450

Large JCV Download

Part 1
Part 2

WinRAR required. Enjoy.

--
"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

Is this the correct large JCV for 2016.20

Strephon_Alkhalikoi wrote:

Part 1
Part 2

WinRAR required. Enjoy.

Are you SURE that this is the correct large JCV for 2016.20?

And where can I find WinRAR?

--
Phil in Mentor, Ohio -- Garmin Nuvi 1450

Thanks!

Strephon_Alkhalikoi wrote:

Part 1
Part 2

WinRAR required. Enjoy.

Thanks!

Thanks

Strephon_Alkhalikoi wrote:

Enjoy.

Downloading both parts as I'm writing.

Must be a lot of people sucking at the teat! Download speed varying from 150kb to almost 700kb, Up and down like a yoyo.

PS: Winrar, Winzip a few others and Windows will unzip

Edit 1:25pm, unzipped and installed in the 855. Did a simulated run and on a route the overhead signs are back. So that tells me the cheapo small JCV file does not get that and the 494***kb file which came down with my 2797 download doesn't either.

Muchas gracias

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Confirmation

Melaqueman wrote:

... unzipped and installed in the 855. Did a simulated run and on a route the overhead signs are back. So that tells me the cheapo small JCV file does not get that and the 494***kb file which came down with my 2797 download doesn't either.

This does pretty well nail down our thought that some of nuvi models that offer split screen JCV files do not offer the full JV coverage offered by the large (full-screen) JCV file and the split screen file offered on at least some models (like the 3597).

I was going to say that I would go and edit my FAQ regarding JVs but I see that I never did write that FAQ. My comments on JVs and the categories of folks who could benefit from the Large JCV are not in a FAQ of mine but rather are listed in jgermann's Index and Glossary.

Please Write FAQ

CraigW wrote:

...
I was going to say that I would go and edit my FAQ regarding JVs but I see that I never did write that FAQ. My comments on JVs and the categories of folks who could benefit from the Large JCV are not in a FAQ of mine but rather are listed in jgermann's Index and Glossary.

@craig

I think it would serve the members better if you wrote the complete FAQ you were thinking of. I do try to copy pertinent instructions/explanations which people have made inside various threads into the Glossary - giving credit to the author, of course.

However, a FAQ pointed to by the Index is, I think, the better way to keep people informed and instructed because it will be more complete.

As always, Craig, we appreciate your work.

JV FAQ

jgermann wrote:

@craig

I think it would serve the members better if you wrote the complete FAQ you were thinking of.

We think alike. After my last reply in this thread I did decide I need to make a FAQ. I know I won't have to tell you when it's done since you are on top of finding new items for your Index/Glossary without any prompting from the ʽοἱ πολλοί (hoi polloi to those of you that didn't take a year or more of Greek in school).

JCV in 2797

This is really weird.
As I said just installed the large JCV file to my 855 it works like a charm.
Now I did same in the 2797 and I am still geting the split screen only.
Renamed the file from Garmin to =D3191180A.=J=C=V so the Gps should not be able to see it. Before I delete anything I do that with a file.

All the files compared to my 2797 backed up version are identical, same name and size, except the new map file 2,441,984kb in size vs the prevoius file at 2,405,504kb.

Only the GMAPPROM img gma unl have the date of the download, but are identical in size, all other dates are the same.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

power reset?

@Melaqueman ... you might need to do a power reset, assuming your nuvi has a "sleep mode". While the unit is on, press and hold the power button until you get a prompt to power down. Then reboot and see what you have.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

Doing a simulated run right now

Did what you suggest.

Failing all that, rather than re-downloading from Garmin should I do a map install? I always download to computer and the device.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Map Install

MapInstall will get the map file, but not the related files like JCV, ASR and SID.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

Please let us know

alandb wrote:

@Melaqueman ... you might need to do a power reset, assuming your nuvi has a "sleep mode". While the unit is on, press and hold the power button until you get a prompt to power down. Then reboot and see what you have.

melaqueman, be sure to let us know your result after a reboot. I'm working on a JV FAQ and want to make sure I have all the facts before posting it.

And if a powerdown/reboot doesn't fix things with your 2797, the other thing to check is a full search in the nuvi and any if there is one, the SD card in the nuvi, for all files ending in .jcv. After a reboot and with only the large full screen JCV file, there should be no reason that you continue to see a split screen JV on the display. If the nuvi and SD card only have the newest City Navigator North America map on them, there should only be a single JCV file on the entire nuvi and SD card.

One last question. You reported that after putting the large jcv file in your 855, the missing JVs from the tiny JCV file supplied with the update are now back and I think you stated that JVs missing on your 2797 with the default split-screen JCV file also returned after installing the large JCV file. I'm now wondering if the assumption I had from you regarding the 2797 is correct since you report that even after the installation of the large JCV file and removal of the old file that the display still is a split screen JV. If still a split screen view, then your 2797 should not have added missing JVs from the large JCV. Please confirm or correct me in thinking that you have tested the 2797 with the large JCV file and gotten more JVs displayed than from the dfault split screen JCV file. We know this is the case for the 855 when substituting the large JCV file but now I'm not sure that your default split screen JCV file offers fewer JVs than when using the large JCV file. This will require two tests with the identical route before and after the large JCV file is installed to see if the large JCV offers more JVs than your default 2797 split screen JCV file on your test route. I hope this makes sense.

To be sure that your split screen JCV file offered during the 2797 map update has fewer JVs to display than when using the large JCV file in your 2797, you must perform the dual test described above and count the number of JVs displayed with each of the two tests.

I think not

Melaqueman wrote:

Did what you suggest.

Failing all that, rather than re-downloading from Garmin should I do a map install? I always download to computer and the device.

I don't think that could help you and I do think it could hurt you by using MapInstall to add/replace the North American map to your 2797.

Strange!

Thanks, so I won't bother with that then.

Doing a simulated run I get a somtimes "Photo Realistic" view. On a nearby multilane highway the GPS will direct me onto the center core and then the photo realistic view will show the overhead signage. But for any other changes such as an exit ramp it only shows a split screen and it's not the greatest.

Anyone else who can verify that's all the new 2016.20 will show?

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

2797

Melaqueman wrote:

Thanks, so I won't bother with that then.

Doing a simulated run I get a somtimes "Photo Realistic" view. On a nearby multilane highway the GPS will direct me onto the center core and then the photo realistic view will show the overhead signage. But for any other changes such as an exit ramp it only shows a split screen and it's not the greatest.

Anyone else who can verify that's all the new 2016.20 will show?

Are you referring to your 2797? If you're still getting split-screen displays at ramps and such, your nuvi is still using the JCV file supplied by Garmin during the map update. If you've removed or disabled the default split screen jcv file, manually installed the large JCV file, then rebooted, you will not see any split screen JVs. Since you still see split screen ramp JVs, something is not right.

It may be that a powerdown/reboot isn't sufficient. If so, a hard reset may be needed after disabling the default JCV file and installing the large JCV file.

Wow Craig

I'm trying to work my way through your reply.

The 855 uses a SD card for the 2016.20 map and I also have the large JCV file on the SD card.
Works fine!

On the 2797 I do not use a SD card since there is room for the 2016.20 map and the large JCV file. Have my re-named 494**kb totally removed from the GPS.

Still trying to understand your reply. Maybe email me and we can discuss it better then.

Right now I'll unplug the 2797 and do another re-boot.

OOOps just read your last post, I'll copy my GPX files and then try a hard reset. Maybe delete the large JCV file before I do that to.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

OK

Melaqueman wrote:

I'm trying to work my way through your reply.

The 855 uses a SD card for the 2016.20 map and I also have the large JCV file on the SD card.
Works fine!

On the 2797 I do not use a SD card since there is room for the 2016.20 map and the large JCV file. Have my re-named 494**kb totally removed from the GPS.

Still trying to understand your reply. Maybe email me and we can discuss it better then.

Right now I'll unplug the 2797 and do another re-boot.
OOOps just read your last post, I'll copy my GPX files and then try a hard reset. Maybe delete the large JCV file before I do that to.

OK, right now I'm doing a 3-GPS simulation looking for and counting JVs so I'll hold off on an email to you.

If the only JCV file on the 2797 is the manually installed full-screen large JCV and no other JCV file exists, and if you've rebooted, you should not see a split screen JV ever. If, as you're saying, you still see a split-screen JV, then I suspect there's yet another jcv file, a split screen one possibly from an earlier map update(?) on your 2797. Either that, or maybe we're seeing something new which is your 2797's ability to display a split screen JV from the large full-screen JCV file. This has never been reported before so it's very doubtful to be the answer.

The most likely reason you're seeing a split-screen JV after installing the large JCV file is that there's still a split-screen JCV file on the 2797 that hasn't been removed or disabled (in addition to the one you did find and disable), or that the 2797 hasn't been rebooted or reset after substituting the large JCV file for the smaller split-screen file.

Hard reset

I copied the GPX file but I did not delete any GPX files from the 2797.

Held my thumb on the bottom right and no message but a "System" was floating up and down the screen. After 2-3 minutes I let go of the bottom right and then the message appeared.

After resetting the country and a few others the GPS came back on.
My favorites were still there but in duplicate. So now I deleted all GPX from the GPS and just cpoied the current and renamed it to temp.

I just found out I cannot see the system folder. I did before and I did not make any changes to the Windows sytem so the GPS system should show.

That means right now I cannot even see a JCV folder or any other files either.

Grrrrrrrrrrrrrrrrrrrrrrrrrrrrrr!

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

.

Thank you!

While we wait

While we wait for mel's reply, let me share the results of an experiment.

Using the different nuvi models, each with the current 2016.20 map update, latest firmware, and default JCV files supplied by Garmin as part of the map update, I simulated a route along the interstate to the other side of Flagstaff AZ, then a return home. The models tested are the nuvi 3597, the 2460, and the 855.

Interchanges and exit ramps along the route: I-17 Exit 340A; I-40 Exit 201; and a challenging double-ramp on I-40: Exit 195 followed immediately by the unnumbered AZ-89 North exit. A table follows with my JV results:

Exit - 3597 - 2460 - 855
________________________
340A - JV* - JV - No JV

201 - JV - No JV - JV

AZ-89 - JV** - JV** - No JV

Results: There are a couple results seen here that I found unexpected and I imagine will be unexpected by many others here at The Factory.

Expected: The nuvi 3597 shows all three split-screen JVs. The asterisk refers to an added Birds Eye View JV and the double asterisk indicates that the double ramp does not show a JV for Exit 195 but does show a JV for the AZ-89 North ramp.

Unexpected: It has been assumed here that the nuvi 2460 would offer the identical results as the 3597 with the exception of not having the added Birds Eye JV. This test shows the assumption to be wrong—the 2460 does not offer a JV for the ramp at Exit 201. This is not a one-time 2460 fluke—I've not seen a JV at Exit 201 many times and with more than a few map updates.

Expected and really unexpected: The nuvi 855 with its tiny default JCV file does not offer a JV for Interchange 340A and AZ-89 (expected since the JCV file offers so few JVs) but does show a JV for Exit 201 (really unexpected since it's offering a JV not available with the split-screen nuvi 2460 which has been assumed to show all available JVs!)

Conclusions:

1) Contrary to popular thought here, not all nuvi models with split-screen JCV files show the same number of JVs. The split-screen JCV with the 2460 does not offer the Ramp I-40 Exit 201 while the 3597 does offer a JV there.

2) Although the nuvi 855 with its tiny JCV file shows fewer JVs as expected with its small filesize, it unexpectedly does show a JV at Exits where at least one (2460) nuvi with a larger JCV file does not show a JV.

3) Maybe the oddest result is that for both the 2016.10 and 2016.20 maps, the respective JCV files for the split-screen 2460 and 3597 are identical in size for the 2016.10 update and again for the 2016.20 update, yet the 2460 does not show all the JVs that the 3597 does. This may imply that in addition to the data of JVs offered within the JCV file, the nuvi's decision of whether to display or not display a given JV is also controlled by each device's firmware or other software unrelated to the map file and JCV file data contents. Also somewhat surprising is that the split-screen JCV file size remains constant between nuvis that offer just regular JVs as well as nuvis that offer regular, Birds Eye and Active Lane Guidance, using the 2460 and 3597 models as examples. If Birds Eye and Active Lane Guidance are built into the JCV file, the devices that can't display these simply ignore the data—or maybe the Birds Eye and Active Lane Guidance are offered in yet another file other than the jcv file.

Hard reset and MTP

Melaqueman wrote:

I copied the GPX file but I did not delete any GPX files from the 2797.

Held my thumb on the bottom right and no message but a "System" was floating up and down the screen. After 2-3 minutes I let go of the bottom right and then the message appeared.

After resetting the country and a few others the GPS came back on.
My favorites were still there but in duplicate. So now I deleted all GPX from the GPS and just cpoied the current and renamed it to temp.

I just found out I cannot see the system folder. I did before and I did not make any changes to the Windows sytem so the GPS system should show.

That means right now I cannot even see a JCV folder or any other files either.

Grrrrrrrrrrrrrrrrrrrrrrrrrrrrrr!

Don't panic, a hard reset returns your nuvi 2797 to MTP mode. You'll need to change it to MS mode to see .System, etc. As you said, your computer settings remain correct and unchanged with the nuvi's reset.

Did hard reset

Did hard reset twice Craig. It does not delete GPX files or POI files.

Yes I eventually rembered about the MTP and did a reset there too so now system folder is visible again. I also had to reinstate the shortcut for the Extra POI files.

But after all that, still the split screen. As a matter of fact in a 4 mile simulated run on the highway I never once got the photo realistic effect. But for the whole length of that run it showed me a split screen on the left on the highway in a position a few hundred feet high as well as an absolutely annoying split screen closeup on the right for the whole length of this trip.

Is it at all possible that there is some residual file from Garmin that defaults to the split screen regardless of what file is installed ???

Still Grrrrrrrrrrrrrrrrrrrrrrrrrrrrr !!!

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Here be dragons

Melaqueman wrote:

...But after all that, still the split screen. As a matter of fact in a 4 mile simulated run on the highway I never once got the photo realistic effect. But for the whole length of that run it showed me a split screen on the left on the highway in a position a few hundred feet high as well as an absolutely annoying split screen closeup on the right for the whole length of this trip.

Is it at all possible that there is some residual file from Garmin that defaults to the split screen regardless of what file is installed ?!

I've always felt that the vast majority of split-screen nuvi owners prefer and use the default split-screen JVs and only a tiny number of these owners preferred and went to the effort of replacing the 400-ish MB JCV file with the large full-screen JCV file. Adding to this is that you may be the first owner of one of the very new (2797) owners to try to use the large JCV file meaning that no one with your nuvi or a similar new model device can comment because they've not tried the large JCV file. Here be dragons. Of the small number of folks who use the large JCV file on an older device that offers split-screen JVs, most do so for the enlarged readability of the JV signs and not to gain extra JVs.

I'm probably not the person to comment since I prefer and keep and use the split screen JCV file in my split-screen devices. Having said that, my thought for you is to return to the expected nuvi 2797 setup: remove the large JCV file and re-enable the default split-screen JCV file.

I remain unclear as to whether you've tested and confirmed that on the 2797, the split screen JCV file offers fewer JVs than could be seen by effectively getting the large JCV file to work on the device.

2797

Since there are not many files you can actually view, I managed to do so with the UNL files and the easy to do "Manifest.txt"
This is what I found and wonder if there is anything in there.
Other than one UNL code is longer the manifest files seem to be identical.

Actually the 3rd last line from the bottom does say Photoreal JCV enabled.

Just for the heck of it I'll swap back to the Garmin supplied JCV. I bought the 2797 in May brand new and looking back the original was the medium size file as well as the one in 2016.10
==============================================================

UNL file Oct 14/15

MXV75UBH9S6B4CSEZ6***RDNVWSZW83TCUVDPFH3YHTYTY3KTG

UNL file July 30/15

MXV75UBH9S***CSEZ6DNFRDNV

Don't know if the UNL file is useful to a pirate and therefore substituded 3 letters with asterisks.

this in "Manifest.txt" file in Backup of 2797 from July 30

0:/Garmin/DeviceConfig_3DBuildings_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_3DTerrain_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_TTSPhonetics_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_JunctionView_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_LaneAssist_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_SpeedLimits_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ASR_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_HistoricTraffic_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_CustomAvoids_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_PremiumPointAddressing_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_2DFootprints_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_3DBuildingsSupp_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_Bluetooth_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRouteHDReq_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRoutePurchaseReq_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRouteStandard_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_PhoneLink_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_PhotoRealJcv_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_NaturalGuidance_Enabled.xml,67247a5d
0:/Garmin/UpdateDeviceConfig.xml,34b0643b

In Manifest.txt from Oct 14

0:/Garmin/DeviceConfig_3DBuildings_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_3DTerrain_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_TTSPhonetics_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_JunctionView_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_LaneAssist_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_SpeedLimits_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ASR_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_HistoricTraffic_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_CustomAvoids_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_PremiumPointAddressing_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_2DFootprints_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_3DBuildingsSupp_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_Bluetooth_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRouteHDReq_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRoutePurchaseReq_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_ecoRouteStandard_Disabled.xml,67247a5d
0:/Garmin/DeviceConfig_PhoneLink_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_PhotoRealJcv_Enabled.xml,67247a5d
0:/Garmin/DeviceConfig_NaturalGuidance_Enabled.xml,67247a5d
0:/Garmin/UpdateDeviceConfig.xml,34b0643b

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

I

DorkusNimrod wrote:

Just an FYI, t923347 has been an active member (as I have been) at GPS Review for at least five years now. I'm sure he supplied info there for the FAQ by his own will.

Still, I've written numerous articles & FAQs (not just GPS related) and sometimes see them pop up as a post or otherwise, with no credit given. It's like the poster came up with the solution/article/workaround/whatever himself! grin I really don't think there's much we can do about this kind of thing. As long as it helps others, I really don't have too much issue with it.

I can confirm that I offered this, now mostly obsolete, FAQ both here and at GPS Review back when Garmin offered the large file with each map update.

--
Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Backup Camera 40 and TomTom XXL540s.

Thanks!

Strephon Alkhalikoi,

Thanks so much for providing the link.

--
Ted - Garmin Nuvi 1450 LM

2016.20 JCV

Hmmm.. I have a 3790 and just loaded 2016.20 on my unit.

But I'm not sure which JCV file version I have. I'll have to take a look.

Thanks for the info all.

JCV - I Give up

Well I'm giving up, re-installed the original midsize JCV and the same results occur. What I see though is that there is an (x) on the left split screen to cancel the right side split screen. But when you get near your exit ramp it re-appears.
In a set route the right split screen also shows you going on the enter ramp and it is really annoying the way it shows it, could almost could make you dizzy. It is almost as if you are hovering right above the pavement.

This coming Sunday I'll be driving from Detroit via Wichita to Laredo and then south another two days into Mexico.

Will be interesting to see what happens. It is really odd that the much older 855 displays the large JCV as expected and the much newer 2797 does not.

I always carry the 855 with me and may just decide to run both at the same time for comparison since the same route is set up on both my GPS's.

Thanks guys for trying to solve this mysterious JCV situation.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Two thoughts

Melaqueman wrote:

Well I'm giving up, re-installed the original midsize JCV and the same results occur. What I see though is that there is an (x) on the left split screen to cancel the right side split screen. But when you get near your exit ramp it re-appears.
In a set route the right split screen also shows you going on the enter ramp and it is really annoying the way it shows it, could almost could make you dizzy...

1) Your dizzy split screen is likely an Active Lane Guidance JV, a feature of many newer nuvis. See:

http://www.poi-factory.com/node/42260

https://www.youtube.com/watch?v=F1gqKXkz9VA&feature=youtu.be

2) In the above faq, you may want to check out all of the examples of JVs since much of what you're seeing which is unlike JVs on your 855 and which you think is a problem may actually be the new Birds Eye or Active Lane Guidance features on the 2797. From what I've read in this thread, you've only tinkered with two JCV files so it's odd that things are messed up after removing the large JCV and re-enabling the default 400+MB JCV file. If your nuvi still is acting up, I'll suggest using Garmin Express or GarminMapUpdater to reinstall the 2016.20 map update.

My guess

pratzert wrote:

Hmmm.. I have a 3790 and just loaded 2016.20 on my unit.

But I'm not sure which JCV file version I have. I'll have to take a look.

Thanks for the info all.

I don't have a 3790 but will guess your 2016.20 map has the D3191180A.JCV junction view file (492,215KB) and the great news is that if you are among the vast majority of split-screen nuvi owners, it's exactly the file you want to use.

From jgermann's Glossary:

http://www.poi-factory.com/node/37552

Junction View (large file)
[thanks to CraigW for the following comments]
Questions often arise regarding the large jcv file each time a new map update comes out, especially from new users here at The Factory, such as: what is this file, do I need it for my GPS device, etc.
To me, there are basically two groups of people that will want to use the large JCV file, which requires manually downloading the file, copying it to the nuvi and disabling the default jcv file:

Group 1: These are folks with older nuvis that can display full-screen Junction Views but receive a very small file from Garmin during map updates. These folks have models including the nuvi 8x5, 1390, and 14xx. (The nuvi 7x5 model doesn't need to manually add the large jcv file because Garmin supplies it during the map update.)

Group 2: These are folks with newer nuvis who receive the split-screen Junction View images but wish to have the full-screen views fill their screen for a few seconds rather than have a longer view with a split screen divided between map & view. The consensus I read here at The Factory is that the vast majority of split-screen nuvi owners prefer the default split screen and therefore can ignore any large jcv file discussions.

If you don't fit into group 1 or 2, you can ignore all discussion of Large JCV files now and into the future. And as long as folks keep backups of their original jcv files and are familiar with file renames, copy&paste, etc., there's no harm in trying the large JCV file, since it can always be removed and replaced with the original Garmin-provided file.

Later CraigW added: with a split-screen, you maintain the ability to simultaneously see the map as well as the Junction View (which is good) but the View is smaller (less good if trying to read what's on the green exit sign, for example).

But your split-screen JV shows the view onscreen until you pass the View's location. With the full-screen View, the View remains on the screen for maybe 5 seconds or so, then disappears again, so you need to be quick in viewing it.

You've nailed it Craig

It's the active lane guidance.

But it's an annoying feature as far as I am concerned.
So according to the link you provided then that is what I can expect to see.

Thanks

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

JCV file mystery continues.

It is good that we now know the cause of the odd JCV behavior that Melaqueman was experiencing after replacing the split screen file with the full screen file. Thanks to CraigW for his persistance in helping Melaqueman solve this.

An interesting point (to me at least) is that this indicates one of two things: 1) Active lane guidance is controlled by some file other than the JCV file OR 2) Garmin includes Active Lane Guidance in the large full screen JCV file even though none of the models it "officially" downloads this file for have the Active Lane Guidance feature. Both possibilities seem odd, but then this is Garmin.

@CraigW ... to complicate your new FAQ even further, I have learned from user danham over on the gpspassion forum that there are at least 2 versions of the 2016.20 large full screen JCV file. He received the following file on his zumo 660 with the 2016.10 update:
D1279270A.jcv 827.9 MB (827,851,105 bytes)

Compare this to the one that comes with the nuvi 755t:
D3060190A.JCV 838,227 KB (858,343,775 bytes)

I suspect this difference may be because of a partial map (like lower 49) compared to the full NA map. I will try to get clarification over on the other forum.

Edit: I got a response from danham on the other forum. It sounds like the file he got came with the "Canada and Lower 49" map, so that explains the difference. It does beg the question though ... if you download a limited region (like lower 49), then replace the puny JCV file with a full NA JCV file downloaded separately, will it cause any issues? My guess is that it will not.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

JCV

The 2016.20 map file I got is for ALL of North America, Canada, Mexico and the USA !

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Thanks

alandb wrote:

Edit: I got a response from danham on the other forum. It sounds like the file he got came with the "Canada and Lower 49" map, so that explains the difference. It does beg the question though ... if you download a limited region (like lower 49), then replace the puny JCV file with a full NA JCV file downloaded separately, will it cause any issues? My guess is that it will not.

Thanks. Good to know the reason...and to bring up another question for us. rolleyes

It also seems odd, assuming that the full North America JCV file will work with a Lower 49 or some such map file, that Garmin would go to all the added effort creating yet another jcv file in order to save just 10MB or so of space.

Thanks

Strephon_Alkhalikoi wrote:

Part 1
Part 2

WinRAR required. Enjoy.

Thanks for posting the 2016.20 large JCV. smile

Nuvi 1450 experience w/ 2016.20 and JCV

I installed 2016.20 on my Nuvi 1450 using MapUpdater. I have an SD card installed on the unit. As in the past, the map itself was the only thing that got installed on the SD card, everything else got installed on the unit. The JCV file was the small one - 24,xxx kb. From Strephon_Alkhalikoi's post I downloaded the large JCV: Part 1, Part 2, and WinRAR but didn't install it right away. I did run WinRAR and it created the large D3060190A file at 838,227 kb.

I tested the unit with the small JCV and sure enough, all of the local JCV's were gone. I then renamed the small JCV file and installed the large one and sure enough the JCV's were back. Everything is now copasetic again. Hallelujah!

Phil

--
Phil in Mentor, Ohio -- Garmin Nuvi 1450

JCV file in 2797

Well before I left on my drive from Detroit to Laredo, the JCV file in the 2797 was acting strangely.
But maybe doing a "Simulator" run and actually on the road is not the same.

I have the medium size JCV and it gives me a split screen. But now I get a Photrealistic view and a lane view after on the right split screen.

Plus I get voice directions as to which lane to be in, one lane or two lanes and even three lanes.

So the last 2 days having covered more than 1,000 miles I am happy with the 2016.20 map file and even with the JCV file.

--
Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

I'm confused

I installed 2016.20 on my 1390. There is no JCV file, but I get 7 junction views on a test route. My old 2012 JCV file is gone too.

I copied the small 26MB D3153190A.JCV file to my nuvi and then the large 492MB D3191180A.JCV file.

Neither made any change in the number of junction views or the quality of the image.

--
><> Glenn <>< Garmin nüvi 2598

Where did you look for the JCV file?

On a 1390, it would typically be in \.system\JCV if in internal memory or in \Garmin\JCV if on SD card.

--
Alan - Android Auto, DriveLuxe 51LMT-S, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon
Page 1>>