The Vintage Gaming Network

PSP custom firmware 3.71 is out! After Team M33’s “short break” from the PSP firmware “sk3n3″, which turned out to be a whole *1* day, they (or should I say, HE) is back with the release of custom PSP Firmware 3.71! “Team M33″ has also revealed that the so called “team” is the one and only Dark_AleX! Unfortunaley, according to his site, custom PSP Firmware 3.71 will be the last release from him. In the near future, Team M33 or Dark_AleX will be releasing a PSP Slim and PSP Fat Unbricker, and a 1.50kernel patch. These will be the last things you will see from Team M33/Dark_AleX according to him. A list of changes in this firmware is as follows:

Changes in 3.71 M33:

- Now uses 3.71
- VSH Menu is not longer launched using HOME key, but using SELECT now. This is to not
interfere with the XMB function of home, which is now more useful in this firmware.
- Psp Slim: umdcache was allocating memory even when homebrew was launched, wasting
memory that homebrew programs may want to use. Now umdcache module is stopped before
it can allocate any memory, only in the case homebrew is launched.

Also, memory is unprotected for user memory usage by M33 core (only when homebrew is launched).
Developer, for a sample of how to use the extra memory, see the extra ram sample of the M33 sdk.

- Both version boot now from 3.XX ipl, and are independent of 1.50.

The main installer will not install 1.50 kernel anymore.
A 1.50 kernel addon for 3.71 M33 that will install inside 3.71 M33 will be released in a
few days (for fat only)

Note: due to some changes in kernel nids by Sony, you can expect a lot of kernel plugins not working anymore.
Programmers: refer to the sdk readme for details.

Installation instructions:

First method for both psp, the prefered when possible:

Requeriments: a fat psp slim with 3.52 M33-3 or 3.52 M33-4. Previous versions of M33 won’t work,
due to a bug that affects them and OE; or a psp slim with 3.60 M33.

- Copy the UPDATE directory into /PSP/GAME/UPDATE and copy the EBOOT.PBP of the 3.71 Sony updater
there but with name “371.PBP”. Note: the program will not even show if you copy it to a different folder than that.

- If you are in the fat psp, make sure you have configured the psp to run the game folder in the 3.XX kernel.

- Execute the program, it requires 78% of battery. If you have idstorage corrupted due to a downgrader, the program
will ask you to correct it automatically so the update can continue.

- Press X, and the Sony updater will begin. Sit and enjoy while Sony code installs 3.71 M33 :)

- When finished, the updater will ask you to reboot (pressing X or O). DO IT. Do not skip this step
shutting down the psp by yourself, or you’ll end with a brick.

- You should be now in 3.71 M33

For more info, check out Team M33/Dark_AleX’s site.