Question about Sony PlayStation Portable (PSP) Console

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How to downgrade firmware for free :)

Please help me..please.. send me the details please.. cassgracie@live.com please :( cries.. iso/cso isnt playable :(

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  • fuxcom Sep 20, 2008

    wher is the link to download the files of creating pandora ...

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:D
im on the job.

Posted on Jul 29, 2008

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What firmware is your PSP running? The only way to downgrade that is use Pandora Kit...

Posted on Jul 29, 2008

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2 Answers

I download the 6.38 version but i can't play the iso and the cso games in the memory stick.


I'm assuming you're referring to the PSP.
Official firmware releases do not support backups (as iso, cso, eboot, etc.).
If you are using a custom firmware, downgrade a version or two. It is also possible that the latest few games can't run on custom firmware just yet.

May 06, 2011 | Video Game Consoles

1 Answer

Downgrading my psp 5.51 to 3.70 m33


Sorry Ryan, you will need a service or pandora battery to reload custom firmware.

This will let you back up games you already own and run them from the memory stick.

You can create a pandora battery and the 'magic' memory stick from any psp already running custom firmware. You can also buy them online, and if you look in the local classified ads website where you live, you can probably find people offering that downgrading service.

I cannot run through the steps here to create your own, but tutorials are all over the net and sites like youtube.

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

5 Answers

Problem with ISO/CSO game with PSP firmware 6.00


Make sure your games are saved in the ISO folder. Also, your UMD MODE should be set to M33 Driver or NO UMD REQUIRED. If you have Official firmware, you can't play ISO/CSO games. Wait for the release of CFW 6.00. Check out pspcustomfirmware.com.

Sep 18, 2009 | Sony PlayStation Portable (PSP) Console

2 Answers

Playing iso.cso games in psp v 5.5


you need to downgrade your firmware to 3.71, have a look at this site it may help www.psp-hacks.com/2006/10/23/psp-iso-compressor-v13/

Jun 01, 2009 | Sony PlayStation Portable (PSP) Console

2 Answers

How to play iso/cso on psp 3006? please help me


youll just put the iso/cso to the iso folder....
.......................wait the minute wer did you download a iso/cso

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

1 Answer

Why i cant play cso or iso games on my vre


Your CSO/ISO files should be in your ISO folder in the root of your memory stick. You might have to make this folder if you don't already have it. Also, your UMD mode have to be set to NO UMD REQUIRED, or M33 Driver. You must have Custom Firmware to play ISO/CSO games.


Custom Firmware site: pspcustomfirmware.com

Mar 21, 2009 | Sony PlayStation Portable (PSP) Slim...

6 Answers

No psp games


you had customfirmware and then you updated ot with officail firmware. you will probably need to use the pandoras battery method to play your iso games again.


google is ur friend

Jan 30, 2009 | Sony PlayStation Portable (PSP) Slim...

1 Answer

I upgrade my psp in version 5.01, now i cant play my games


HELLO! There's no need to downgrade ur PSP. If u have upgraded ur PSP from the official site and a official firmware has been installed on to ur PSP, it won't execute games(ISO,CSO) from ur memory stick. It will only run games from the UMD. If u want to run ur games from a memory stick u have to install a CUSTOM FIRMWARE. Try www.psp-hacks.com these guys have many softwares on their site. Dont worry its not that hard to put a Custom firmware onto ur PSP. 

Jan 30, 2009 | Sony PlayStation Portable (PSP) Slim...

1 Answer

Iso/cso won't run to PSP version 4.20


You cannot play .iso or .cso files (or any homebrew games) on your PSP unless you have firmware 1.5 or a custom firmware. Any "off-the-shelf" firmware such as 4.2 will not support these types of files. They will just show up as "Corrupted Data".

You can go through the process of downgrading your firmware from 4.2 to 1.5, then from 1.5 you may upgrade to a custom firmware such as 5.00 m33-4. Doing so would require a good deal of technical know-how and a LOT of patience. If you do not want to risk ruining your PSP, do NOT try this. Research methods of downgrading such as "Pandora's Battery" and other firmware downgraders.

You were able to download games from the PSP website because they are programmed to play on the current firmware. Even if you were to (somehow) properly convert the .iso or .cso files to an EBOOT.PBP file, it would not run unless you have firmware 1.5 or custom.

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

1 Answer

GAMES FOR PSP 4.05


You need a pandoras battery + magic memory stick. Look on google, there are a million guides. This downgrades it to version 1.5, and then lets you add custom firmware.

Nov 12, 2008 | Sony PlayStation Portable (PSP) Console

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