[x3sphere]

Here is a step by step guide for installing 3.71 M33. Please note that you must be running 3.52 M33-3, 3.52 M33-4 or 3.60 M33 to begin this installation.

Note: Before installing 3.71 M33, be warned that it currently is lacking the 1.50 kernel, even on regular (Phat) PSPs. Dark_AleX does plan to release a 1.50 kernel patch within the next few days, but for now you can use the eLoader to run 1.50 kernel homebrew on 3.71 M33.

Installation Guide

First grab the 3.71 M33 files and extract them.

1. Copy the UPDATE folder contained in the archive to X:/PSP/GAME

2. Download the 3.71 EBOOT, and then place it in X:/PSP/GAME/UPDATE

3. Navigate to the Game menu on the PSP and execute the program, it will not run unless there is 78 percent battery free.

4. Press X and the update process will start. Yes it may look similar to a regular Sony update but don't worry!

5. Once finished, the updater will ask you to press X or O to reboot. You MUST do this, otherwise you'll end up with a brick.

6. You've now successfully installed 3.71 M33

[Cheezeball99]

There ya go, waitin' for this one, too many peeps askin' questions in the news thread. Nice stuff, as always, x3.

[Chilly Willy]

One note - because this custom firmware updater runs the actual 3.71 updater, your keys must be good before doing so. The cfw updater will unpatch key 5, but all other keys must be good or the 3.71 updater will quit without updating. This means that people running on a phat PSP should check their keys beforehand. You'll find my latest KeyCleaner here in the PspDevelopment forum.

All the keys reported by KC should be good, with 0x42 and 0x46 being clear, and key 5 being patched. The type of patch for key 5 doesn't matter, so long as it's just a patched key 5. If this is not the case, fix the keys before trying to update.

[Acerthief]

damn, that's not good. i tried your method your said in KC, going to 2.71 and unpatch key5, when i pressed the update EBOOT it stills asks me to go find a official techition.

[shadowthor]

Do you only need to unpatch key 5? Then you don't need to go through that method. Just update to 3.52 M33-4 (provided its only key 5 that was patch and the rest weren't corrupted) then update to 3.71 m33. When i updated to 3.71 m33 it unpatched the key and was like installing a normal firmware.

[Clyde18]

hey guys, i'm now running 3.40-OEA

So... do i just follow the installation guide as it is or is this guide meant for 1.50FW only? I'm a total n00b here... thx for any help.

[foesum_twinz]

i try to do 3.71 M33 always give me this problem "System is version there is no need to update "
what i need to do?
Please help.

PSP-2001 slim silver

also when i try to do pandora stuff said
the game could not be started (80020148 )

what's the problem.

[Cheezeball99]

Originally Posted by foesum_twinz

i try to do 3.71 M33 always give me this problem "System is version there is no need to update "
what i need to do?
Please help.

PSP-2001 slim silver

You have to have 3.60M33 installed before you install this, which I can only assume you don't. If you're running Sony 3.71 there is no way to do it at this point, you'll have to wait a bit, there'll be a release to downgrade PSPSL's soon.

[foesum_twinz]

thanks for help i have been trying to figure out this.

[tomahawk96]

Im trying to go from 3.52-4 and after it says "starting SCE updater" my mem stick flashes around a bit like usual and then it stops and gives me the error:
The system cannot be updated.
The update data is not applicable for this
system
(CTA80000025)

Anyone know whats up?
BTW, its an old phat TA-082 and checked with Chilly Willy's key cleaner and patched key 5 only to get error above. Thanks