I was able to get in to boot mode and take some pics. here are the pics. please try to adjust your eyes they are pretty dark but as far as I can see the directories for PRG1 and PRG0 are exactly the same
in either case there is no prg.flg file ANYWHERE
thanks again as usual
I can't read those screen shots. I don't think I need to (turning off automatic flash helps).
OK. It is a VERY good idea, before attempting any "fixes" to back-up /USER to SD. Rule #1 when attemptin to fix something - Don't make it worse.
The Testmode file manager has a quirky user interface. So this is a good way to learn it. I haven't done it is a long while, but I think it is covered in the video.
Next, since there is no PRG.FLG in /USER, we need to add one. This is an empty file - you can create one on your PC, copy to SD, (with Testmode.key in root). Reboot the AVIC into TestMode, then select PRG.FLG on the SD, and copy it to /USER
Eject the SD and reboot the AVIC. See if that solves your problem.
One thing that bothers me is - I can't understand how the files could get corrupted in the 1st place. So - this might not fix the problem. However, this does seem like a software (rather than hardware) failure, so it is worth a shot.
Another option would be to re-install the last upgrade (CNSD-310FM). I think you can force a re-install in the TestMode menu - but I've never done that.
I found a reference in another thread that says:
"get previous update, put on sd card with testmode.key (normal one) and select force update platform and navigation."
However, that would be a last-resort and may not even work on Z140. CNSD-310FM was an ugrade to older unitw to the latest (Z140 - at that time) software and maps. However Z140 has the additional feature of auto-equalization - using a special mic). So that feature might not be supported with the CNSD-310FM update. You could also try the latest upgrade available for purchase on NAVTEQ web-site. It is for the Z140, but might be just maps.