With 651, recalculating a route after a wrong turn took up to 18 seconds. You would be halfway to the next county before the RT3 chimed. Build 890 optimizes the LZ77 decompression algorithm for the map data. Recals are now sub-5 seconds.
: Remove any existing navigation maps and insert the firmware CD. rt3 upgrade 651 na 663 build 890 can42 new
: Hold the MENU button for several seconds, select Device Description , and confirm your current version begins with 6.x (e.g., 6.51). If it begins with 5.x, you have a VAN bus system and cannot use this update. With 651, recalculating a route after a wrong
Updating the RT3 is a sensitive process. Failure to follow these steps can "brick" the head unit: Verify Hardware : Ensure your car is a select Device Description