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if you have a PSP 1000/2000 ta-088 or lower mainboards u can use a pandora's battery. as long your psp mainboard is ta-088 v2 or lower. u can't use on the psp 2000 ta-088 v3 or psp 3000 otherwise your psp is bricked.

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14y ago
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16y ago

http://forums.afterdawn.com/thread_view.cfm/610313 look through that. they will show you the step to step tutorial to make your 3.93 Official Sony Firmware to any of the custom ones. but you do need a old psp battery, or the psp phat battery i mean.

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15y ago

ok first you take your psp apart. then you soak the buttons, and the case in ammonia and bleach for about a day or two then, you play your psp until you fall asleep in sleepyville then go to the mayors house(me) and he(I) will stab you you with a memory stick duo. and im going to use a LEXAR one!!! HAHAHAHAHAHHA

sike go to psp-hacks.com and go to downloads and then go to firmware and download 3.90 and put it on your psp and runn it and it should work, not sure though i havce custom firmware ok first you take your psp apart. then you soak the buttons, and the case in ammonia and bleach for about a day or two then, you play your psp until you fall asleep in sleepyville then go to the mayors house(me) and he(I) will stab you you with a memory stick duo. and im going to use a LEXAR one!!! HAHAHAHAHAHHA

sike go to psp-hacks.com and go to downloads and then go to firmware and download 3.90 and put it on your psp and runn it and it should work, not sure though i havce custom firmware

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15y ago

Requirements and Installation : - Installation requires a PSP with 3.52 M33-3 or higher [Phat PSP], or 3.60 m33 or higher [Slim PSP]. Others and Official sony firmwares shouldn't try it. - USB cable. - Battery 78% loaded, - Extract the file you have downloaded anywhere on your computer. - Connect your PSP to your computer using the USB cable. - Copy the "UPDATE" folder into /PSP/GAME - Exit USB Mode and go to your XMB - After you run the "PSP Update version 5.00", the screen will turn black. - Follow the on screen instructions, these instructions will take you to the Official Sony Update screen. press X for start..Press ">" button to continue..press "Accept" .. press ">" .. and press the "X" button Start update.. please wait..when update completed press the "X" button to restart automaticly.. done.. - Then you can erase "UPDATE" folder, they won't be any longer necessary.

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13y ago

you have to downgrade to psp version 1.50 then go to new version

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Q: How do you update PSP from 3.10 to 3.90?
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