I have a 8200 NEX, Ive put the newest fw on it (I think it was 1.01).
I have a Bypass (3 wire...from ebay lol..) I think its called a double pulse or something.
Ive done the POWER off/press secret button..
ok the problem:
The FY: Ive Formatted BOTH a USB Flash and a SD Micro card (problem is on both)... (and ive tried a 2nd SD card (both class 10 sandisk)
After inserting (any of the 3).. and going to SD Card or USB..
It will READ the format etc.
I have a total of 3 folders: HD Video's, SD Video's and MP3 Music.
Generally the 1st time it will go into all 3 folders etc navigation is fine.
(sidenote if I back out it DOES revert to the 1st file (of "A" (a to Z)) It never remembers where it left off.
More importantly 5 mins later I turn off car (and avic powers off by key)
and when I restart car/avic 2 of the 3 folders will be BLACKED (greyed out) and you CANT get into them
This happens will all 3 media's and always after the 2nd time of accessing it.
All are formatted FAT32.
I called Pio all they said is to press reset button on front.. ... did this it didnt solve problem.
Any insight or help would be MUCH MUCH Appreciated 
thanks in advance