A group of russian hackers have released a new PSP custom firmware which have got a lot of people rather excited. A few users seem to confirm it working but as per usual, only try such releases at your own risk. Help spread the word.

Summary of features offered by CFW v3.51 M33

- All functions of v3.51 firmware retained - PS1 support, high video resolution, MP3 visualizer, internet navigation, PS3 connection etc
- Launch official UMDS which require v3.51 firmware
- Direct launching of ISOs/CSOs
- Direct launching of homebrews and demonstrations
- Direct launching of PS1 images
- Ability to alter the CPU speed of the PSP
- Recovery mode
- Multi-region
- Bugfixes
- Customize all your icons etc

Download: here

Insructions:

1 - If your PSP is in firmware 1.50, copy the folders kxploitpatcher and kxploitpatcher% which are in the "1.50only" folder to ms0:/PSP/GAME/ and run the patcher first.

2 - if you already have firmware SE/OE, copy the folder M33CREATOR to ms0:/PSP/GAME150 if you have 1.50 copy to ms0:/PSP/GAME

3 - Download the firmware update 3.51 and rename to 351.PBP and copy into the ms0:/PSP/GAME/M33CREATOR/ or for 1.50 users to ms0:/PSP/GAME150/M33CREATOR/

4 - Download the firmware update 1.50 and rename to 150.PBP and copy into the "ms0:/PSP/GAME/M33CREATOR/" or "ms0:/PSP/GAME150/M33CREATOR/"

5 - on your PSP, run the "3.51 M33 CREATOR". Once finished, the PSP will return to the XMB, and a new program, the "3.51 M33UPDATE" appears!

6 - now run "3.51 M33UPDATE".

7 - Once finishes, press on X to shutt off. Restart manually.