This tutorial is not mine i post this for backup so that if my psp get semibrick i know where to go
FULLY-BRICKED PSP: Your PSP turns on with a BLACK screen + can't access RECOVERY mode...
SEMI-BRICKED PSP: Your PSP turns on with a BLACK screen + you can access RECOVERY mode...
You can downgrade custom firmware 3.80m33 + 3.90m33 + 4.01m33 WITHOUT PANDORA by downloading the 3.71m33 recovery file below(I tested it twice and it worked both times!)
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RECOVERY FLASHER
Recover your PSP to 3.71m33 DOWNLOAD THIS
Recover your PSP to 4.01m33 DOWNLOAD THIS
(I STRONGLY recommend 3.71m33 because with the PSP it's WAY easier to UPGRADE than downgrade)
After downloading and EXTRACTING - you'll have a folder called RECOVERY.
This folder goes into PSP\GAME
Turn your PSP ON holding the "R" button (to access RECOVERY MENU) and select TOGGLE USB.
Plug your PSP to the computer (USB etc) and transfer the above download "recovery" folder (for 3.71m33 or 4.01m33) to PSP\GAME (over ride if it asks you to),
Go to CONFIGURATION and set your "autorun program at..." to ENABLED
to BACK and then select "RUN PROGRAM AT..."
You'll see something like this
(I selected I agree, now take me to the program)
Select "flash new 3.71m33" or "4.01m33" whichever you downloaded above
There is one more menu. I selected "reset (format) settings as well". This will reset the TIME AND DATE + PSP name etc. If you don't want to start up the TIME and DATE again...select "do not reset..." and press X
Give it a moment and it'll start doin' it's thing
When done... "press any button"
NOTE: When you press "X" to shut down your SCREEN may appear turned off while your power light may start blinking or stay solid. You can remove the battery and then put it back in and turn your PSP back on and everything should be fine.
PLEASE NOTE: If you are downgrading your PSP custom firmware, you may get get this blue error screen
