Pages: 1 2
Custom Firmware 5.00 M33 has just been released. Dark Alex completely skipped 4.02 and released 5.00 M33. Interested in the changes? Read the PSP 5.00 Firmware changes. The most welcome change to 5.00 is the full QUERTY keyboard. No more cellphone like input for us ^_^.
Note: If you’ve already install 5.00 M33, you can skip to it’s patches on the next page. The latest patch is 5.00 M33-6.
Update: You might want to install 5.50 GEN-A after installing 5.00 M33.
Requirements:
- PSP Phat or PSP Slim with 3.52 M33 or higher. If you don’t have custom Firmware yet, read this CFW Compatibility Guide to see if you can have it installed on your PSP. If you don’t have custom firmware, read this guide on How to install custom firmware first.
- PSP battery that’s at least 78% full
- Download: 5.00 M33 | 5.00 M33 | 5.00 M33
- Download: 500.PBP | 500.PBP | 500.PBP
- Disable ALL plugins.
- Back up your save files (so that if they get corrupted, you still have backups)

How to install 5.00 M33 CFW on your PSP:
- Extract the 5.00 M33 installer files to your computer.
- Copy the Update folder to X:/PSP/GAME/ on your PSP’s memory stick.
- Download the official 500.PBP. If the file you’ve extracted is named EBOOT.PBP change it to 500.PBP before proceeding.
- Copy the 500.PBP to the directory; X:/PSP/GAME/UPDATE on your PSP’s memory stick.
- Run 5.00 UPDATE from under Game on your PSP’s XMB
- Press X if asked to correct idstorage keys
- Continue to install the official 5.00 SONY when prompted
- After all process is complete, press X. Your PSP will reboot.
- Congratulations, you’ve just installed 5.00 M33
Now for the patches……
STOP!!!
If you haven’t successfully installed the 5.00 M33 firmware then you can’t proceed here since these are just subsequent patches. Read the guide on How to install 5.00 M33 on your PSP above or if you have official firmware, post a comment and let’s see if I can help you out.
If you want to upgrade your 5.00 M33 to it’s patches turn to the next page.
Pages: 1 2
Tagged with: 5.00 Firmware, Custom Firmware, How to install 5.00 M33
Filed Under: Playstation Portable



















WHAT U ASK chuck MY I UPDATED IT MY WAS VERSION 5.02 WHEN IT WAS IN BOX KNOW ITS 5.03
I EVEN TRAYED UR GEN IT DIDNT ALOW ME TO START THE LOADER SAYS CURAPTED WHY?????????????????????????HELP ME DUD
do i need any patches for the upgraded psp of mine or they are not nescessary for playing ps1/psx games on the psp??
hi sir,, thnx for guiding us on how to upgrade the psp,, i used to have the 3.80 m33 and when i wanted to play final fantasy 7 of ps1 on the psp it always got stuck at some point…. now its better and i am going further,, however, i sometimes get the same problem as the image stucks and to play it i have to restart the psp,,,,, is there any solution to this problem??
escuse me sir,,, ever since i uopdated the psp to 5.00 m33 i cant play the games i have,, they are the type that u put in the folder ISO,, final fantasy 7 of ps1 is working fine on the psp but the psp iso games arent,, wat can i do to make them both run normaly???
Just wanted to say thanks for this. Worked first time.