Question about Sony PlayStation Portable (PSP) Console

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PSP downgrade HELP!

Hello, I have psp firmware version 3.80 and would like to downgrade to 3.71 m33, BUT I DONT KNOW HOW! can someone please help me?(my psp is not a slim is is a regular version)

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Re: PSP downgrade HELP!

Here is a guide on how to downgrade your psp

Posted on Jan 08, 2008

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How to Downgrade PSP Firmware 5.51 to custom firmware 5.00 m33


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

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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 these guys have many softwares on their site. Dont worry its not that hard to put a Custom firmware onto ur PSP. 

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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

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resore the default stuff, under system settings. Y do u want 2 downgrade tho???

Nov 23, 2008 | 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

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Tell me which city u r from and whats your present firmware version?

Jul 24, 2008 | Sony PlayStation Portable (PSP) Console

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Psp download

yeah, if your PSP is not Modded and it is running on official firmware of SONY, then you should prolly have it modded or have it made into custom firmware...If you don't know how to check the what firmware version your PSP is running...then here is how:
open your PSP, then on the XMB, got SYSTEM SETTINGS then to SYSTEM information. on the top it says SYSTEM SOFTWARE, then check if your firmware version has a m33 suffix...if it doesnt have an m33 at the end, then it is an OFFICIAL firmware so have it modded, my friend...

Jul 22, 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

4 Answers

Downgrade PSP from 3.80

It's impossible to downgrade your PSP from it's current version. I'm not quite sure why you'd want to downgrade, but maybe you should upgrade (If a version is available) again and see if you like that version better. ^-^

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

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Upgrading to 3.52 m33 from 3.52 only

use this its the safest way and make sure your psp is fully charged and when you do the downgrade upgrade make sure ure psp in pluged in to (just follow the instructons)

Sep 02, 2007 | Sony PlayStation Portable (PSP) Console

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