All, I took a partial plunge and did a surgical upgrade to 8.350. I removed the system file and did a manual navcore cab file upgrade to an SD card. This gave me app 8.350 while keeping bootloader 5.5015. I keep 8.350 on an SD card, and 8.302 on the internal, each with their own copies of voices and maps.
I have a 720, map 825, with PLUS traffic
Confirmed improvements:
- floating icons in browse mode - arrows to home, destination, and current location
- advanced screen in browse mode preferences, with option to disable above icons (markers)
- tts voice in route demo speaks at 400% speed now, up from a max of 200% in 8.302
- able to add rotaries in mapshare realtime - will not show rotary on map, but will show a rotary in the turn arrows, and say "cross the rotary" in route mode
- fixed metric rounding error in mapshare
- fixed hidden turn restrictions in mapshare
Reported improvements but unabe to test:
- fm transmission of instructions, but only when playing music (I don't have mp3s on my tomtom)
- blackberry phonebook import (don't have a blackberry)
- LIVE traffic works in Operate my GO (don't have LIVE traffic)
- lowered (non distorting) line out volume (don't use line out)
Reported new problems that I didn't have:
- screen flicker / river artifacts in 2d mode (possibly memory speed/bootloader related)
- cannot download new voices in HOME (seems to only impact those who previously had the 8.320 hack, try deleting the entire Loquendo and voices folder and reinstall the app)
Confirmed new problems:
- need to increase volume slider by 20% to match the volume from app 8.302
- slower route planning (it waits longer on the "writing instructions" section. Maybe because I'm using an SD card, I'll check again if I attempt an internal memory installation)
Reported new problems but unable to test:
- sound mutes if battery is less than 40% (my battery hasn't yet gotten that low yet)
- 3rd party programs no longer work (I don't use any)
- x40 voice control to a favorite goes to the wrong one (don't have an x40)
Confirmed installation issues:
- long time for initial satellite fix (typical of new software upgrade)
Installation issues that I couldn't test:
- additional HOME disconnect required to see INTERNAL vs EXTERNAL memory (didn't install from HOME)
- repeated pin resets required to see phonebook (my phone doesn't support phonebook transfer)
Overall - the pros outweight the cons for me