Hey guys long time lurker first time poster.

my model is avic 900bt us/canada version

My pioneer avic f900bt used to bootup than the screen would go black and thelights would go off and the fan would stay running.

so I read and followed instructions on the fix bootup/ black screen/ whatever thread. booted up after restart. and again same thing. I tried over again and nothing. (im now going on 48 hours without sleep as i NEED to fix this)

I can get into test mode easily so if theres something i can do from there than great. Perhaps i deleated or moved something i wasent supposed to. How do i go about restoreing all the folders to what originally came on the unit? i have searched but cannot find anything.

please help i need this unit as i am traveling tomorow.

any help is greatley apreciated

nvm i got it

Wish I could say the same I thought I figured mine out and it gets to the main menu but I cant select AV and the GPS wont start.As well the settings menu opens but It will not allow any settings.Been at this for a week with minimal success

it seems like they all crash at once lol...

mines dead ....

i dont no what to do anymore how did you restore from scrach?

it seems like they all crash at once lol...

mines dead ....

i dont no what to do anymore how did you restore from scrach?

http://avic411.com/index.php?/topic/22599-solved-the-formatmbr-sdmlc-and-mapdbinfo-error-0x0000/

Still having some minor issues but at least i have music and nav again

yea mines working great. I found that i was putting a folder inside of the folder instead of all the documents inside the folder into the other folder. spent a couple sleepless nights working on it but works great now