I have (2) Ver 3.5 BittBoys. They are both on Ver 3.9 CFW. They both randomly
boot to a black screen (sometimes a gray screen). When they boot to a black
screen I still hear the 'ding' when the green BittBoy logo should be displayed.
So I safety shut down the BittBoy by holding the 'R' button (after hearing the
'ding') for about 3 or 4 seconds, then press the 'A' button, then finally slide
the power switch off. Then I slide the power switch back on and hope that it
boots up. If it doesn't I repeat this process until it finally boots up.
This is a real pain!!!!
Well I have found a fix that is working on both of my Ver 3.5 BittBoys and would
like to share it with anyone who is having this problem.
Solution that worked for me:
-Make sure BittBoy is turned off
-Eject the microSD card and plug it into your computer (I have Windows 10)
-Go to the file explorer, and you will see several partition pop up. We want to
be at the Main partition (the one with the ROMS, GAMES, EMUS, etc. folders)
-Navigate to the \KERNEL folder
-You will see two files in the KERNEL folder: Daemon + R61520FB.KO
-Rename the R61520FB.KO (I renamed it to XXXR61520FB.KO)
-Copy the replacement R61520FB.KO file I have provided to that same folder
-Eject the microSD from your computer, insert into your Ver 3.5 BittBoy, turn on
and it should boot up every time now.https://drive.google.com/open?id=1MRSMd0nUyK2j8XWzxuEARNLOZasdJqWs
Good Luck + I hope it helps you