3.51 M33 Custom Firmware Installation Guide & FAQs

Ok, so here it is. 3.51 M33 Custom Firmware.

Following in Dark_Alex’s footsteps come a hacking team from Russia called the M33 Team who have developed a 3.51 custom firmware.

Features >

* 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

This works will all models of PSP including TA-082 motherboards

Your PSP must be running either 1.5 firmware or any 3.XX OE or 2.71 SE custom firmware.

Download > 3.51 M33 CUSTOM FIRMWARE

Installation Instuctions >

1. If your PSP is 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.

if you are already running custom firmware you don’t need to do this so skip to step 2

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 Sony official 3.51 firmware update from here >3.51 UPDATE
extract with winrar and rename EBOOT.PBP to 351.PBP and copy into the ms0:/PSP/GAME150/M33CREATOR/ or for 1.50 users to ms0:/PSP/GAME/M33CREATOR/

4. Download sony official 1.50 firware update from here >1.5 UPDATE
extract with winrar and rename EBOOT.PBP to 150.PBP and copy into the ms0:/PSP/GAME150/M33CREATOR/ or for 1.50 users to ms0:/PSP/GAME/M33CREATOR/

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

6. now run “3.51 M33UPDATE”.

7. Once it finishes, press X to shut off the psp. Restart manually.

8. Down a shot of Vodka and celebrate.

please note, if you are under 18 (21 in some places) please skip step 8.

pics courtesy of wertypsp2

FAQs >

Q. My battery is under 75% can i still flash the firmware >
A. Yes, just hold triangle and L trigger whilst the flasher is loading (do this at your own risk)

Q. Do homebrew and isos still work in the normal way?
A. Yes, homebrew, iso/cso etc load just like OE firmware, iso/cso go in the ISO folder and homebrew goes in GAME150

Q. Will my 3.40 OE customisations work (icons/fonts etc)?
A. Yes, except for certain files which you must not flash >
* system_plugin_fg.rco (psp will freeze going into usb mode)
* pspbtcnf.txt
* vsh.prx not installable
* paf.prx not installable (semi-brick)
* common_gui.prx noncompatible (semi-brick)
* the topmenu_plugin.rco of the topics which contain a vsh.prx are
non compatible

Q. is NO-UMD 100% compatible with all games?
A. No it isn’t. Games that needed a UMD on OE firmware also need a UMD with M33 firmware.

Q. I have 3.XX OE on my psp and it is customised. Do I have to remove the customisations or go back to 1.5 before installing?
A . No this will install fine over the top.

Q. Does cwcheat work?
A. i’ve heard reports of games not loading when the cwcheat.prx is on. cwcheatpops.prx works

Q. I can’t enter USB mode.
A. go into recovery mode and toggle flash1. delete config.se. If you have customised your psp after installing make sure you have not flashed system_plugin_fg.rco to your flash0

Q. Can I use the EBOOT the installer creates on another psp to install custom firmware instead of creating one again?
A. it seems the EBOOT is generic, so yes.

Q. Does the brightness fix work?
A. Yes it does.

Q. Are there any other known issues?
A. quite a few at the moment including wifi enabled homebrew like pimpstreamer. i’ll try to keep this FAQ updated as best I can.

Category: PSP Hacking