
Based on firmware 5.50, Team GEN's 5.50 GEN D3 brings full compatibility with PSN demos and UMD titles to date while maintaining access to homebrew applications.

Custom firmware 5.50 GEN-B2 for PSP. This an update for preexisting installs of
5.50 GEN.

TeamGEN and GENyUS-developed custom firmware sporting the feature set of 5.50.

Custom firmware 5.00 M33-6 attempts to the fix the low-speed Memory Stick issue that has been problematic for certain users since the release of 3.71.

Dark_AleX's custom firmware 5.00 M33.

As the latest addition to the M33 firmware series, 4.01 M33 introduces multi-language support in Recovery Mode.

Homebrew developer Dark_AleX has released an update to PSP custom firmware 3.80 M33. Now at 3.80 M33-5, the latest release fixes a bug that prevented custom CPU settings from working in games.

Designed for use through ChickHEN, custom firmware 5.03 GEN-A is compatible with all PSP units to date, including the 3000.

Custom Firmware Enabler allows users to enable certain M33 functions from within the ChickHEN environment.