Question about Sony PlayStation Portable (PSP) Slim (PSP-2000) Console

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They say my psp does not have m33. what is m33?

What is m33? my psp only play demo games.

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M33 is a custom firmware. With a custom firmware the psp is hacked and you can download games on the psp for free. But you would need to hack it to get m33

Posted on Jan 28, 2009

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How to install games on psp 5.00 m33-4?


get a game umd

insert it in the psp

it will autorun

play the game.

OR

if u wanna play games saved on a memory card, then change the firmware to a custom one for ur psp to get those games working

Nov 03, 2009 | Sony PlayStation Portable (PSP) Slim...

1 Answer

I upgraded my psp 2006 from 5.00 m33-6 to version 5.50. Now it does not detect the games saved in my memory stick. What should i do?


Are you trying to play the game from the memory stick? Or are you trying to play a game from the UMD and retrieve the saved game data from the memory stick?

5.00 m33 is a custom firmware that allows the PSP to play games stored on a memory stick. If you upgrade to 5.50, which is an original Sony firmware, that functionality will go away. If you have custom firmware, you should never upgrade it or the features like playing homebrew or loading games from a memory stick will go away.

Oct 09, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

Psp 5.03 downgrade to 3.9 m33-3


First, try to determine your PSP's version. If it is the PSP 3000 (PSP slim with a narrow ring on the UMD Door), you can only play game demos from the PSN and can't be modded as of this date. If you have the PSP 2000 (slim with a wide ring on the UMD door) there is a chance you can't downgrade depending on your motherboard. Pandora's Battery and MMS is required to 'jaibreak' your PSP if you are on Sony official firmware.

Apr 11, 2009 | Sony PlayStation Portable (PSP) Slim...

1 Answer

Will not play games


+go to M33 Recovery Menu
How to go to the M33 Recovery Menu
-restart your psp
-then turn it on while you hold the R Button
-you're in the M33 recovery menu

+go to configuration

+Change UMD Mode( currently : M33 driver UMD Required)

go back

and exit

Apr 01, 2009 | Sony PlayStation Portable (PSP) Slim...

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

1 Answer

PSP WONT PLAY SOME DOWNLOAD GAMES


For every newer game released you have to install the newest M33 firmware. M33-5.00-4is the newest. Check out www.pspiso.com. You can get the newest firmware and games free. Best site I have found. Hope that helps.

Jan 04, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

Downgrade psp firmware 5.02


Someone will have to run the flash program to get you back to M33. Pandora battery and Magic stick with M33 flash on it. Most homebrew and programs will not run on any M33 version above 3.9. New UMD games from sony will have the latest firmware and the children will usually run the firmware upgrade to play the game. It will allow the new UMD to play, but the Sony Firmware will write over the Custom M33 firmware and you will not be able to run the games on your Memory stick.

Dec 30, 2008 | Sony PlayStation Portable (PSP) Console

1 Answer

Still facing problem on playing cso


ok update ur psp with a newr custom firmware ( i would say all the way to 5.00 m33-3 with 1.50 kernel addon) make sure that u have a folder in the root of ur psp mem stick that is called iso and put ur games in there.

Dec 03, 2008 | Sony PlayStation Portable (PSP) Slim...

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

2 Answers

Do it relly works?


The reading of ISO games doesn't depend on your memStick...it really is about the firmware of your PSP, wether it is a Custom Firmware (meaning it has been modded/installed with a hacked firmware) or an Official Firmware by Sony...If your PSP firmware version has a M33 suffix, then it can play most ISO/CSO games...on the other hand, if your PSP DOES NOT have a M33 suffix, then it is an Official Firmware by SONY therefore, it CANNOT play ISO/CSO games and other homebrew apps...

Aug 26, 2008 | Sony PlayStation Portable (PSP) Console

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