M33 PSP Slim Custom Firmware (CFW)

Please select desired M33 Custom firmware version below:

Version 3.60 M33
Version 3.71 M33
Version 3.71 M33-2
Version 3.71 M33-4
Version 3.80 M33
Version 3.80 M33-2
Version 3.80 M33-4
3.80 M33 Popsloader
3.80 M33 Popsloader V2
Version 3.90 M33
3.90 M33 1.50 Kernel add-on (PSP Fat)
3.90 M33 1.50 V2 Kernel add-on (PSP Fat)

Custom firmware 4.01 M33

What is Custom Firmware?

Custom firmware allows users to do more with their Playstation Portable. For example: play Emulators, run home made games, load legal ISO back-up PSP Games from a memory card, Back up your games to a compressed CSO format to from the memory stick duo. Which lets you put more games on a MS and so forth.

If your coming from an Original Firmware, Such as PSP 4.00 you will need to make a Panadora Battery, which is basicly a battery that puts a PSP into service mode to allow you to flash custom firmware. If you cannot mod or make a pandora battery you might want to look at getting a Datel Tool battery. Which is the same as a panadora battery which puts the PSP into service mode.