nuvi 750 update: 2.50

Changes made from version 2.30 to 2.50:
Added support for Madmaps.
Added support for enhanced circular routes. The unit will detect when routes are circular and adjust the start and stop point to the point where you actually enter the route. (Existing routes will be cleared.)
Added support for TTN Canada Traffic provider.
Update position and address information on the Where Am I display.
Corrected issue that could prevent the unit from receiving traffic data after power interruption.
Corrected issue that prevented the legend from being seen in 2D maps
Corrected issue that could cause some route point names to be lost after power cycle.
Corrected issue when using the Traditional Chinese pre-recorded voice that caused it to say two twice.
Corrected issue where some letters were not drawn after entry on the keyboard.
Corrected issue when searching by spell name that would cause double letters not to be matched.
Corrected issue that could cause repetitive guidance when driving through a u-turn via combination.
Corrected issue searching for cities with Cyrillic maps.
Corrected issue that could show speed limit sign in inappropriate locations.
Corrected issue that occasionally caused the incorrect Country prefix to be added to phone numbers.
Required 1st and 2nd new PIN values to be entered the same in order to change Garmin Lock PIN code.
Corrected issue when searching for specific long street names in Spain.
Resolved issue with city search when MPC maps and City Navigator maps were loaded for the same area.
Corrected intermittent problem when searching for items Near the current destination.
Allow usage of the cursor and delete keys on the enter coordinates keyboard.