Question about Sony PlayStation Portable (PSP) Console

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What shall i do to my psp 4.01? it can't read downloaded games...

Do i need to upgrade it or downgrade it? what is iso,m33?

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5 Suggested Answers

  • 5 Answers

SOURCE: when i update my psp 3.90 m33 to 5.00 my psp cant read iso or cso

reformatting erases all data and if you need an iso folder just create a new folder in the root folder

Posted on Aug 22, 2009

  • 12 Answers

SOURCE: HOW CAN I PUT GAME ISO/CSO ON MY PSP 5.00 M33-4..?

you have to press select and change the cpu clock xmb and game settings and also change the umd iso mode to m33 driver

Posted on Nov 03, 2009

  • 64 Answers

SOURCE: how to downgrade psp version 6.00? I cant download

yes,you can downgrade thank god because if you were model 3000 it is hard to downgrade yourself 1,go to a sony provider in your country and buy a original slim battery then you can make a pandora battery and magic memory stick there are plenty of videos in youtube about this in youtube and google or you can buy the pandora battery and magic memroy stick from here by not risking anything(accepts paypal) http://pandorabatt.blogspot.com/

Posted on Dec 27, 2009

  • 64 Answers

SOURCE: how can i put games ISO/CSO on my psp 5.00 m33-4?

if you have isos of new games ,sorry to tell ya they are patched and will only run above 5.50 so ,try upgrading to 5.50 gen d2 and there are plenty of video in youtube which gives you information on this this is a more complicated patches in the years of sony ,nice move sony

Posted on Dec 30, 2009

SOURCE: how to downgrade psp 1001 from ofw 6.20 to cfw 5.00

Click on the link below and watch the video to learn how to downgrade your Sony PSP to cfw 5.00

http://www.youtube.com/watch?v=WP9OhtepUEM

Posted on Apr 07, 2010

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1 Answer

How to downgrade psp 1001 from ofw 6.20 to cfw 5.00


Click on the link below and watch the video to learn how to downgrade your Sony PSP to cfw 5.00

http://www.youtube.com/watch?v=WP9OhtepUEM

Apr 07, 2010 | Sony PlayStation Portable (PSP) Console

2 Answers

I cant play the game in memory stick..


you'd first have to downgrade your psp. try to lower it to 3.50 or 4. something. then insert the .pbp file... this file is a hack.. or an upgrader for a psp.. once you do this.. your psp will be back to version 5.03 but now you can play downloadable games.

Jul 27, 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

1 Answer

What shall i do to my brand new psp slim 4.01?


Generally it wont matter what you do with your PSP as you can downgrade the software to suit your requirements. If the spftware you ahve now allows you to play iso games and that is what you want then i suggest you keep it like that. I would generally suggest keeping your software as it is until you find something that you cannot do. When that happens post again and il answer.

Jan 28, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

Iso cannot be recognized in 5.02


you had m33 custom firmware(plays iso) installed on your psp and then you upgraded it with sony officail firmware(doesnt play iso) you will need to downgrade your psp

pandoras battery

youtube an google r ur friends

Jan 11, 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...

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

The game could not be started..


if you have slim psp upgrade it to firmware 3.90 m33 or 4.01 m33-2,to read your cso or iso files, go to the psp technician to help you to you to upgrade,because they use a pandoras battery to upgrade your psp,.you cant upgrade your psp without the pandoras battery..

Oct 05, 2008 | Sony PlayStation Portable (PSP) Console

1 Answer

PSP Downgrade


just make pandora stick with firmware 3.71 m33 go to psp iso .com it will tell you everyyhing good luck

Jun 09, 2008 | Sony PlayStation Portable (PSP) Console

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