PSP
PSP 3.52 M33 Installation
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AUTOMATIC INSTALLATION 4 COMPLETE N00BZ
3.52m33 Easy Updater from any OE or 1.50
3.52m33 easy installer (thanx to Colticus)
3.52-m33 Update 2 ****NEW****
follow the english.ru instructions
How to recover your PSP OE/M33 to 1.50 (by lommer)
- http://www.pspmod.com/forums/custom-firmware/13392-3-03oe-c-3-10oe-recovery-menu-guide.html
- scroll down to the bottom of the first post
- download RECOVERY folder
- unpack it in psp/game/recovery
- turn off your psp.
- hold R and turn it on.
- in recovery mode select "run psp/game/recovery/" and wait till its flashed back to 1.50
p.s. do this at your own risk
How to go from M33 back to 3.40 OE
Download the 3.40 oe-a flasher and copy the contents of the 340oeflasher folder to PSP/GAME/RECOVERY. (There should be 2 files. eboot.pbp and DATA.DXAR).
Go into recovery mode and execute the recovery from the option listed.