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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 OFW 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: Games requiring 5.50 and 6.00 firmwares currently lock out 5.00 M33 users. You may want to read up this guide on how to patch them or simply upgrade to 5.50 GEN-D3. Having 5.50 GEN-D3 installed will play these games without the need to patch up.
Requirements:
- PSP Phat or PSP Slim with 3.52 M33 or higher. If you don’t have custom firmware yet, READ: Convert your PSP to custom firmware.
- PSP battery that’s at least 78% full
- Download: 5.00 M33 | 5.00 M33 | 5.00 M33
- Download: 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. Rename the EBOOT.PBP to 500.PBP before proceeding.
- Copy the 500.PBP to the directory; X:/PSP/GAME/UPDATE on your PSP’s memory stick.
- Disconnect your PSP
- 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.
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Tagged with: 5.00 Firmware, Custom Firmware, How to install 5.00 M33
Filed Under: Playstation Portable


















can i do this with a psp 3000 without a pandora battery???
Nope. Pandora doesn’t work on PSP-3000s. Once you upgrade over 5.03, it’s game over.
dam each time i do this
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. Rename the EBOOT.PBP to 500.PBP before proceeding.
* Copy the 500.PBP to the directory; X:/PSP/GAME/UPDATE on your PSP’s memory stick.
* Disconnect your PSP
* Run 5.00 UPDATE from under Game on your PSP’s XMB
* Press X if asked to correct id storage 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
done the above 2X now I get a black screen,then a shunt down on the psp O.o
jap PSP fat 1000
After shutting down, what is your firmware version? Still 5.00 and not 5.00 M33?
Thanks guys m33-6 is super sweet and also for the easy to follow steps
how can i find whether my custom firmware version is 3.52 or greater??
Sorry. I found out how to…. Took out the battery and i’m back to 3,52m33. I’ll try sylv3rblade’s advise to others with the same prob.