Install 3.71 M33 on Your PSP in 4 Easy Steps
This post may be a bit late but I know a lot of you PSP owners out there are looking for installation guide for the 3.71 M33. For a bit of information, 3.71 M33 was created by Dark Alex. In other words, M33 is Dark Alex. Now on to the instructional guide!
Requirements
- You must have 3.52 M33-4 installed on your PSP. If you don’t have one yet, lucky for you I wrote a guide on installing 3.52 M33-4 too.
- A Slim (PSP2000) or Fat PSP (The older version) with 78% or more battery.
- PSP AC adaptor
- A USB Cable
- A Computer
- Ability to understand and follow instructions
- If you have the fat PSP, configure GAME folder to run on 3.52. How? Shutdown your PSP. Then power on your PSP while holding down your R button. This will take you to the recovery menu. Go to Configuration > Game folder homebrew and check if 3.52 is enabled. Press X or circle if not. Exit the recovery menu.
That’s it. if you have all these then you are ready to go!
Now here are the 4 very easy steps:
- Download the 3.71 M33 installer pack I’ve made just for you. Unzip the file to anywhere on your computer.
- Connect your PSP to your computer via USB and copy the UPDATE folder to ms0:/PSP/GAME
- Go to your XMB menu and run the M33 update program. The screen will go black and this is normal. Follow the instructions. Be sure you have your PSP plugged-in to the AC adaptor. Screen will change to the Sony Update screen. Accept and update.
- This last instruction is VERY important. After the update is finished, the updater will ask you to reboot by pressing X or O. Do so, press X or O and the PSP will restart. Have fun on your new upgraded PSP!
After successfully upgrading your PSP to 3.71 M33, you can install the 3.71 M33-2 update by following the guide I made here. Special credits go to Dark Alex. You can send him donations on his website via PayPal.
UPDATE: I wrote a guide on how to add the 1.50 Kernel Add-on for 3.71 M33. Please check it out if you need it.
December 1st, 2007 at 6:27 am
ummmm… after i downloaded the 3.52 i tried to download the 3.71 but the folder just says corrupt data what should i do?
December 1st, 2007 at 4:48 am
hello
i’ve wanna update 3.52 m33 to 3.71 m33. after i done that my psp wont start anymore. the screen stays black. and the light of the memorystick keeps flashing.
please help.
November 30th, 2007 at 1:16 pm
Go into recovery mode (Hold R shoulder button down while turning on PSP)
Now go to configuration then to UMD MODE and keep pressing X till you see Sony NP9660 NO UMD.
@kola amolegbe try this
When it is set to the above setting go to BACK and press X.
Now go to ADVANCED and press X.
Go to ADVANCED CONFIGURATION and press X.
Make sure all the settings here are disabled.
Now EXIT out of recovery.
Now try the ISO/CSO.
November 29th, 2007 at 3:43 am
hi when I try to update to 3.71 it says verifying 371.pbp … cannot open file (0×80010002). I am currently running system software 3.52 M33-4 and have had no problems. Please some one help me thankyou
November 27th, 2007 at 1:39 pm
what is pandoras battery?? wer can i get it, or how to downgrade my psp
November 27th, 2007 at 11:27 am
Just wanted to say thanks, a PSP newbie but a age old computer user. Easy to follow guides with simple explanations PSP 3.11 > 1.5 > 3.52 M33-4 > 3.71 M33 > 3.71-3, Pandora’s battery, full theme pack and game in under 2 hours! Thanks to your easy to follow instructions.. Please keep up the good work!
November 27th, 2007 at 3:42 am
o dont matter iv just got winrar thnxs
November 27th, 2007 at 3:30 am
erm when i downloaded your folder for the 3.71 update, it came as a .rar folder so i cannot unzip it or anythingHELP!!!
November 26th, 2007 at 11:08 pm
it clearly says there that you need to place it on ms0://PSP/GAME/
You have to read the requirements part first. Please read everything carefully. Thanks!
November 26th, 2007 at 10:21 pm
I’m reading step 2 and it doesn’t tell me what game folder
i need to update my psp: is it game 352 or game 150 or just game.
please tell me!!!