Question about Sony PlayStation Portable (PSP) Console

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Psp M33 update problems

Im very good with the psp but when i was updating my psp to 3.80M33 it says i need a firmware 3.25M33-3 or higher i have 3.25M33-4 weird bug what should i do and is it true i can update to M33 via pandoras battery because i can easilly make one

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Re: Psp M33 update problems

Hello .. go to recovery menu (press and hold R shoulder button when turning on the system)

then go to config -> kernel.. set your kernel to 3.52 if its on 1.5 :D

Posted on Jan 26, 2008

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Re: Psp M33 update problems

I suggest you revert back to the original firmware

Posted on Jan 26, 2008

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1 Answer

I bought my psp with the software 3.52 M33-4, which im reading is a custom firmware. Is it possible to get it back to the original software? Update From PSP 1000 or PSP 2000 v1 or v2 That Has Cfw that is at least 5.00 m33-6 and have at least 75% bat.
How To Install:
1.Download it
3.Copy the 550.PBP To MS Root what u see when u open up the psp folder
4.Copy Update under PSP/Games/Update in the file to PSP/Games
5.Run the installer and click enter then click on install flash CFW 5.50 gen-D (the first option)

Jan 16, 2011 | Sony PlayStation Portable (PSP) Console

3 Answers

I accidentally updated my psp to 6.20 now how can i downgrade it to 5.30 again is anybody can suggest what to do

well if its a 3000 ur out of luck, im sorry but you cant downgrade 3000, if you have a 2000 or below then you need a pandoras battry and only phat batterys can be pandorized and you need the necessary firmwares and custom firmwares,

try googling psp go there they may help you as they update their site with new software that is coming out for the newer psps, not psp gos though

Jan 15, 2010 | Sony PlayStation Portable (PSP) Console

1 Answer

I update my 3.71 m33 to 5.00 dont have extension m33 kunt 5.00

I think the best way to solve your problem is to create a pandora recovery recover a custom firmware that was running as well...create a pandora battery..You can find many tutorials in youtube...Good luck!!!

Sep 10, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

Bakit ganun ung psp koh na update ko ng 5.51 kaso d ako makahanap ng 5.51 M33 -2 PLSSS HELP meEEEEEEEEEE!!!!!

dude custom firmware nba ung psp mo? im running a 5.00 m33 then updated to 5.50 GEN-B.wala rin kasi akong makitang 5.51M33-2 try updating to GEN much newer than m33.

Aug 22, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

PSP 1001 error code "The game could not be started (DADADADA)" This happens when I try to update the firmware downloaded from Sony, or when I try to update from a game (Star Wars Renegade Squadron) I...

you can't update your psp from custom firmware(what you have) to official firmware (what your trying to get to) What you need is to upgrade your firmware from OE-A to M33. All you need to search for is 3.51 m33 creator.

Jul 06, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

Can i play games frm memory card with updated psp 5.51 firmware

it should be possible if you get custom firmware or downgrade
how you can do this is by using a pandora battery and a magic memory stick
you can buy a pandora battery off ebay or whatever for cheap these days and you can use your current memory card as a magic memory stick
all it does is start the psp in a mode where you can reinstall the firmware with whatever firmware you want.
you will have to research into it because i have done it on my psp
im running 5.00 m33-2
but my psp is a 1002 model

good luck mate,
if you have any questions, email me

Jun 29, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

I cant play games in my psp memory stick after i updated to 5.2

Please check you update. If your update is low, you must upgrade it to 3.52 m33 then download a firmware 3.70 m33 or higher to get the m33 recovery.
As your PSP start press SELECT and you can see a menu then go to "UMD ISO MODE" from "normal" change it to "Sony NP9660" then exit.
Now enjoy playing ISO or CSO game. Happy playing.

Jan 29, 2009 | Sony PlayStation Portable (PSP) Console

2 Answers

How to downgrade psp v5.01 to 3.80

hi your previous psp version is 3.80 m33 if yes your using custom firmware that why you can play game to your memory stick the problem is you upgrade your psp firmware to sony official firmware 5.01 you reinstall your firwmware again using custom firmware like 5.00 m33-3 cfw below with m33 or OE

Nov 02, 2008 | Sony PlayStation Portable (PSP) Console

1 Answer

Update psp

You need to have a Pandora's battery, when you have one (and a JigKicked Mem. Stick, that has the update on it) Put the Mem stick in and while putting the battery in hold the L trigger this will bring up and installation menu, scroll and enter, Install 3.71 M33. Then it will start to flash your PSP. Done!
If you need help please feel free to E-Mail me at:

Aug 21, 2008 | Sony PlayStation Portable (PSP) Console

1 Answer


You can update the PSP via the Network Update on the PSP, or by manually downloading the file onto a Memory Stick from

Apr 05, 2008 | Video Game Consoles

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