2460 not showing roads after 2016.10

What you're seeing is your GPS using the Basemap rather than City Navigator: few roads and other highlights, non-searchable, and straightline routes.

Since you've installed 2016.10 three times now and see a 2016.10 in myMaps but it doesn't work, I agree it could be a corrupt map file. Is the map you see in myMaps called CN North America NT 2016.10 ALL trafficTrends™ North America 4.25?

Can you look at the file in your nuvi and tell us the date and filesize? The file will be gmapprom.img. On my 2460, it's in the .system folder (shout if you don't see a .system folder) and 2,405,504 KB (2,463,236,096 bytes) in size with a date corresponding to the date I installed the map update. Also let us know if you see these identically-dated files: gmapprom.unl and gmapprom.gma.

I suspect that your reinstallations are still using the files downloaded to your computer and if these are corrupt, you need to delete them, then download yet again which should work for you on yet another installation to the nuvi. I don't remember where the downloaded files are kept on your computer but I'm sure someone can help us here.

I would not accept Garmin's offer of a 20% discount and actually feel miffed that they didn't work harder with you to get the map update working on your 2460. Did they suggest connecting the GPS to your computer then let them check out your 2460?

You didn't mention this but can you let us know if you ever updated a map in a nonstandard fashion; e.g., installed a partial map, used MapInstall, updated a map with the clone procedure, etc? Another question: PC or Mac? What level of Map Detail is shown (Tools/Settings/Navigation/Automobile/MapDetail)? On your Main Menu, do you see a car in the upper left hand corner (next to the signal strength)? SD card installed? If so, what happens if the SD is removed when powered down, then reboot the nuvi? When you described your route lines, I'm assuming they're a straight line to the destination. If they're not straight lines but are jagged as if they're following real roads, let us know!

Good luck. This should be fixable.

The 2460 does not show on your profile but I assume it is a 2460LMT.

You have already done a Master Reset, which would have been one of the first things I would have suggested.

Do Tools > Settings > MyMaps and verify that there is a map that is checked and tell us what it is.

My first reading of the thread also missed this starting me off on a wrong reply

The OP wrote This just happened. After updating to 2016.10, there are no roads displayed on the screen. The vehicle icon is there and will leave a 'bread crumb' trail. I can choose a destination and it will appear to route, but it will just show the route line, not any roads. All menus seem to work and the settings/System/myMaps shows 2016.10 and is checked.

How much free space do you have on your 2460? If you are tight on space, you may not be completing the full boot cycle.

Thanks for your responses.
Yes it's a 2460 LMT.
gmapprom.gma date 4/7/2015 size 2600 bytes !?
gmapprom.unl date 4/7/2015 size 25 bytes !?
GUPDATE.GCD date 9/13/2015 size 38,336,232 bytes

The map that shows in tools/settings/myMaps is:CN North America NT 2016.10 ALL TrafficTrends North America 4.25

When routing to a POI, the line is as if following roads, not a straight line, but of course, no roads show at all.
Pulling the MicroSD has no effect. I set 'home' to the current location and the home icon shows. Zooming in and out has a slight effect. The vehicle moves slightly towards or away from the house icon.
Yes, there is a car icon next to the signal strength and bluetooth icon.

I have never used an 'unofficial' method to update.

I updated the 2460 immediately after updating my RV760, which went OK. I'm assuming that the computer only DL'd the maps once then updated both unites from the same map file, but I could be wrong.

I'm on a PC running Win7 64 bit. I7, 16GB ram

Thanks

When doing a 'properties' on the disk 'GARMIN', it shows 6.99GB used, 320 MB free.

How would I go about freeing up space on the internal drive.
I could delete all the files but English in the Text folder, but if the problem is GB, MB won't help. Same with voices, keyboards.

What we want the OP to tell us is that
"CN North America NT 2016.10 ALL"
is what is checked.

I also wonder what "Map Detail" is set to. If "Less" is chosen you see only major roads

I also wonder whether or not he has good satellite reception. Needs to be an accuracy of 30 feet or so, I would think.

320 MB should be enough to complete the boot cycle.

You gave us the date/size of files gmapprom.gma and gmapprom.unl, but not for the map file itself gmapprom.img. What date/size is shown for that file?

I have a 2460 with the 2016.10 map. I've deleted all the non-English language voices in the voice folder (leaving me with 13 English language voices) and I'm pretty sure that I haven't deleted other files. For me, my computer shows 2.28GB of 7.31GB free in the nuvi. If your 320MB free is after you deleted non-English language voices, I wonder if there are leftover files from the installation or some such thing and as suggested, there's insufficient working space to complete the update. If you still have many non-English voices (.vpm files) in the voice folder, see how much space you can recover by deleting them.

One place to check would be the JCV folder in the .system folder. There should be just one JCV file, D3191170B.jcv with a size of 501,949,541 bytes.

Another place to check is for left-over map files from previous maps in the .system folder. Look for large xxxx.img files. You should have one of each: gmapbmap.img, gmapprom.img, and GMAPTZ.img, with only the gmapprom.img being enormous. Look especially for a gmapsupp.img or other .img file not mentioned above.

Yes, that map (the only one showing) is checked as stated in the OP. Map detail is set to 'more'. There are NO ROADS SHOWING at all, not trails, minor, major, private, freeways, nothing. A blank map screen except for the vehicle icon, the home icon, and (if turned on) the blue bread crumb trail of where I've been. So I assume the actual GPS receiver is working.

When I was actually driving with it on, it would even show me the upcoming road as text, but it was as if I was driving off-road in the middle of nowhere.

Based on my other GPS experience, satellite reception is irrelevant to the map showing any roads, it just won't locate you. You get a vehicle icon with a question mark, but roads show.

There's a big AHA! There is no gmapprom.img file. At least in the .System directory. The only .img file is gmaptz.img.

Yes indeed, that's the question.

Something unexpected is happening to this nuvi since the 2016.10 map is somewhat functional (search is enabled, a GoTo creates a route that appears to follow roads and not be a straight line which means that the device is not running with only the basemap).

With my 2460, I did try setting my Map Detail to Less (the only options are Less, Normal, More) and found that in my small city, most roads are still shown. I'd still like to know what detail is being used, hopefully Normal, but I don't think Map Detail is the cause of essentially seeing no roads.

Bummer, your nuvi is missing its basemap and City Navigator in the expected folder. But it must be somewhere, at least the City Navigator, since it shows in myMaps and searches and routes can be created.

You could try looking in the Map folder or the Garmin folder and see if it's there, then look in the SD card's folders for an img file.

Given that the nuvi only shows 300+MB of free space, the 2+GB gmapprom.img file or some other enormous file must be somewhere in that nuvi itself.

This is getting interesting but I still believe we'll figure it out today. What's quite useful is that I have a 2460 with the 2016.10 map so we can continue to compare our units looking for differences like the ones I've already mentioned.

Are there any .img files in the \Garmin folder? Does your nuvi have a \Map folder? If so, what files are in that folder?

I have a 2460 and it has plenty space, mi update for 2016.10 went without a hitch

I agree with flaco and craig that the 2460 should have space. I think that the fact that ttait says it shows 6.99G used is an indication that there is something extra, and perhaps corrupt, on his 2460.

@ttait, have you made backups of this device? If so, what was the size of the backup(s)?

I am assuming you are in mass storage mode and not MTP.

What do you see in the .system folder? My 2595 gmapprom.img is shown as 2,405,504 KB. I have over 2 GB free.

OK, I may have really screwed up. I deleted extra language files, no problem there. Then I had windows check the drive for errors. (this was where I left the path of reason) I ended up with a very large 'found(000)' directory. I assumed (see) that these were files with broken links, so I deleted the Found(000) folder (about 6GB) figuring I would use express and it would reinstall everything. Unfortunately, not. I've tried to install 3 times, erroring out every time. No explanation of what went wrong.
Previously, .system was a directory I could examine, now it's a file windows doesn't know how to handle.
I do not have a full backup, only poi's. If someone has a .System file, I could manually copy it over. Short of that, I don't know what to do.
Yes to storage mode, not MTP.

try RECUVA.

Oh boy, if about 6GB was deleted, we have problems. The options I now see are to not tinker with the 2460 until you feel you have the software, etc on the computer to attempt to undelete the files and folders. The more tinkering that's been done after the deletion, the less likely an undelete will work. If that fails, the next step is to look through the various forum threads for the GarminCure 3 and see if you want to try that fix. All that have used GarminCure will tell you it's not easy. Thinking more about this, I'm not sure that an undelete would even work. If an undelete was successful, you'd still only be back to the very large 000 folder, not the semi-working nuvi you had at the beginning. I've never heard of an un-error-checker attempt. Garmin Cure 3 may be the best of several bad options.

The use of Windows error checking/fixing as also been discussed here and the general consensus is not to use it on a nuvi unless this is a last resort and you're willing to accept bricking the device as a possible outcome.

Good luck.

If he didn't empty the Trash before he unplugged, the files are probably still there. I don't think you can recover them, unless they show up in the Trash bin, either on the unit or on the desktop. If you have enables seeing all system files then you can see the Trash bin on the unit.

If your nuvi still connects in mass storage mode, I would suggest calling Garmin support (call, don't email) and explain what happened. The fact that the disk check utility removed so many files tells us that your data was very badly corrupted ... probably by Garmin Express or by you not "safely removing" the device after the update. In any case, if you can still access it as a mass storage device, Garmin can remotely access your nuvi and hopefully recopy the missing files.

One more fling against the wall. I deleted .System because it was obviously corrupt. Then, miracle of miracles, Web updater completed without errors, reporting that my 2460 had been upgraded to 3.60. It had given me errors before.
Then, I started GE, it said I had a map update, and it looks like it's re-installing the maps. We'll see. Says another half hour to go. Would be nice if it worked again. Definitely have the space on it now.

More anon.

I will wait with bated breath for your next post. Amazing.

OK, here's where things stand now.
After GE finished installing the map, I restarted the 2460. Huzzah, the streets were showing around my home. Then I got an error message that the FM traffic file was not installed. Odd, I thought because I assumed that was part of the update with either web updater or GE. No problem I thought, I'll just use WU to install that file, and while I'm at it, I'll install the language file updates that were listed in 'Other updates'. (American English only)
Web Updater appeared to complete normally. When I restarted, again no streets were showing. Again, I can route to a POI, (or a favorite, which remarkably, are still there) and it will calculate a route and show the appropriate line, say please follow the highlighted route, show distance, but NOT show the map layer.
The proper map file IS checked, detail is set to 'MORE', traffic trends and myTrends are enabled. Neither 2D or 3D show a map.
Arghh. I'm wondering if it really is a hardware failure, like a corrupted memory address. I am running diagnostic test on the checksum diagnostic page now.

more later

Diagnostic results:

Would be a lot easier if I could copy and past, but here are the highlights of what I think are out of place
Boot Blk, X-Loader,System PASS
Basemap, Suppmap, Suppmap1 Erased
PROM1 D2338 2016.10 CN North Am.(etc.) 0.0%
PROM2 Erased
Dir DB Erased
TZ Map D1074-00 Time Zone Map 16.02 Unknown
JCV D3191-17 2.00 Junction View (JCV) 3EDCC9CE (I assume checksum)
Demo Erased
FTL ?????-?? FTL Image (Don't know what this is)
All audio files have a checksum
GTM20 B0482-01 GTM25 RDS-TMC receiver Unknown
Cfg Defn D2614-07 0.00 Rev:0B Pass
Unknown D2356-00 0.00 USCanadaCyclopsSample.gpl Error

Sorry the formatting isn't better.

1) This is so odd

2) Thanks for your very thorough explanation of what you've done, your settings, etc. This can eliminate many back and forths in this thread

Not that it'll likely help, but you could share your nuvi's free space now, and whether you can see the gmapprom.img file and where it's located. You may be right on it being a rare hardware issue.

Thanks for the reply.

The free space now is 2.69 GB
the gmapprom.img file (2,405,504 kb) is in .System

I don't understand why it did show the map layer immediately after the map update, but not after I used web updater.

@ttait, we appreciated all the info you are detailing - it is very interesting.

Looks to me like the memory used is reasonable based on similar units, so you are closer to a solution.

As I understand you, there was a recent period when you saw streets - so I am doubting a "hardware" problem.

I suggest calling Garmin again. Perhaps a different rep will be able to make some sense of what has happened and find the problem.

FIRST - make a backup of the unit as it sits right now (as well as your other unit). Assuming you get Garmin to provide a fix, a comparison of the files would be very interesting.

Good luck

@ttait, I do not recall that you have said what is on your SD Card. What is its use?

You have said that removing it makes no difference but I would still suggest that you remove it until the problem with the main unit is resolved - just in case.

I certainly don't know about all that was reported.

What seems suspicious is that apparent indication that the BaseMap was erased. The basemap is rarely if ever updated so why would it be erased?

Also suspicious is the 0.0% connected with the City Navigator.

On my functioning 2460 with 2016.10, I see differences from your results as follows:

Basemap F0057-01 5.01 Worldwide Autoroute DEM... 476EBB00
PROM 1 D2338-21 20.16 CN North America NT 201... 405FA900
TZ Map D1074-00 16.02 03B43A00
FTL D2799-00 0.00 FTL Image
GTM20 B0482-01 5.50 GTM25 RDS-TMC Receiver 003F5C00
Cfg Defn D2616-07 0.00 Rev: B Pass

I will note that to get these results, I first tapped the Start Test, then waited for the results, then finally tapped the More button to get the results page that you showed. I didn't just go straight to the More display.

We agree completely on the others values from this page.

I also see that even though your Cfg Defn showed a Pass, I see that my D# differs from yours.

I agree that this is the most confusing result of your MapUpdate/WebUpdater runs.

Are you doing a "Safely remove" of the device when disconnecting it from the computer after an update?

One thing you could try is to use the cloning method to put the map files on a SD card. Note that many of the related files that you get with a map update can also remain on the SD card as well, if you move them into subfolders of the \Garmin folder (not \.system). This includes files like .JCV, .ASR, .SRX, .SID. Once you get the map and related files installed on SD, delete these files from the unit, rerun Garmin Express to see if there are any software updates.

Incidentally, did you make a backup when you had your nuvi map working? If you get it back into a somewhat operational state, make a backup before trying to fix other problems. That way you can get it back to this state as you try other fixes.

I am wondering if there is some conflict between Express and WebUpdater. What are the version numbers for these two pieces of software?

Correct me if I'm wrong, but doesn't Garmin Express offer everything that WebUpdater does? If so, maybe it's best not to use WebUpdater.

I think GE offers two things that WU doesn't which are map updates and new voices, but WU may offer nothing beyond what GE can already offer.

I don't know how my basemap would have been erased, but that seems to be a problem. I wonder if the map updates are supplemental and applied to the basemap.
I'm now getting a checksum for the 2016.10 map in Prom1 of 03A97900.
My cfg Defn is the same as yours, ie. D2616-07 Rev:0B Pass

The FTL is still ?????-?? (I still wonder what FTL is, because I'm sure I can't go faster than light yet)

Is there a repository for the basemap file? And where would it go?

Thanks

Doing a drag and drop backup now.

My understanding of WebUpdater is that it will update/repair/replace system files for older, non-current devices that GE does not do. What I've read about cure3 (haven't done it) is that it uses WebUpdater, not GE.

Here is a download link for a Basemap (gmapbmap.img) that I found over on the Garmin software forums. Note that I have not used this file myself, so cannot guarantee its integrity/safety. But it was not removed from the Garmin forum, so I assume it is OK.

http://1drv.ms/1BObEyH

Am now.

Unfortunately, I did not backup the device when I briefly saw the streets. Since I got an error message about the traffic receiver, and I knew (because I saw it previously) that I could install that from WebUpdater, I just went there. I assumed it was just a trivial update. and you know what they say about assume.

I'll have to look up how to do the cloning method. I have an 8GB MicroSD.

Right now I'm backing up the 2460 to a PC folder. 4.62GB, about 20 minutes left.

Here's a thread from about six years ago discussing somewhat similar issues given the diagnostic log results, with success after contacting Garmin:

http://www.fixya.com/support/t3439809-garmin_nuvi_200_softwa...

But if Garmin has already told you they won't work with your older device as you say, then it could be tough. Given that most of Garmin's nuvi models are now officially discontinued, let's hope for all of us that the first tech you spoke with was wrong and that another call may result in success.

Thanks, downloaded. I'm assuming it goes in .System? Only 5.6Mb?

gmapbmap.img goes in \.system.

It just occurred to me that if your basemap is missing and for some reason your map display is zoomed way way out (for example if you don't have a satellite fix), you would get a blank map display. It will be interesting to find out what you see with the base map installed. Try pushing the "+" button on the map repeatedly to see if it will zoom in to road detail.

After copying the gmapbmap.img to .System, I'm happy to report that the 2460 seems to be working.
One oddity I notice is that after calculating a route, if I touch the map to get a route overview, the background map does not display if zoomed out past the 5 mi. scale. (5 mi. shows the roads/parks/hiways, 8 mi. does not.
Actually, this happens in the 3D view as well, just no scale.
This happens whether or not I have a GPS lock.
Maybe this is the wrong basemap for the 2460?
gmapbmap.img is 6,039,552 bytes.

duplicate

Send a PM to one of the members that have a 2460 with your email address and I bet they will send you the basemap file from their 2460. I would be happy to send you the basemap files from my 3597 and 755, but it would probably be best to get one from your same model.

That size doesn't sound right, so apparently the link I found is not the right file. It should be more like 50 MB.

Congrats on having a workable GPS that's at about 95% functionability.

Interesting, I looked at my different device backups and see slight differences in the size of gmapbmap.img for various models so the basemap map not be interchangeable between nuvi series.

For my 2460, the gmapbmap.img is 51,003,392 bytes (49,808 KB) so I expect that may be why your zooming doesn't work. Try looking for a much larger gmapbmap.img file. I'm not sure if my ISP would let me email a file that size or if yours would accept an email that size, but we could give it a try. In a pinch, I could burn it to a CDR and snailmail it. But first, it may be available on the web somewhere—or Garmin could give it to you online if you found a customer service tech willing to help you. This'd be so simple for them to do for you.

Hmm, if the larger basemap works, be sure to keep a copy since you will have no idea what will happen with 2016.20

Garmin used to have the Basemap available for download as shown in this old thread from 2008: http://www.poi-factory.com/node/15809. Unfortunately, that went the way of the large JCV file, and the download link no longer works (shame on Garmin). So you are probably stuck with finding the file on one of the nefarious pirated content sites. I have looked around for a legit copy to download, but came up empty handed. Maybe someone else has a link?

Does anyone use or know about OneDrive? I think I could upload the file to my Public folder on OneDrive, then invite tt to access it. Does this seem doable and safe (I'd hate to be letting tt access everything I have on OneDrive—remember, I'm a OneDrive newbie.)

Yes, you can just share 1 public folder to anyone or no one or a specific person. The link to the basemap that I installed pointed to a OneDrive file. Unfortunately, I think it's the wrong file for my GPS. Diag. reports:
Basemap F0060-10 3.00 INTL Standard Autoroute... 20C6C800

I would appreciate the correct file. I looked earlier and I couldn't find it. The ones I did find were either removed or for a different country.

Thanks

@ttait ... I can split the gmapbmap.img file from my 3597 with Winzip into 10 MB pieces (there will be 5 of them). I am pretty sure my email provider will allow 10 MB attachments if yours will. If you are interested, PM me your email address and I will send you 5 emails with one attachment each. Once you get them you can reassemble them with Winzip.

Here is the latest gmapbmap.img file of about 50MB. Your welcome to download it from:

http://www.filedropper.com/gmapbmap