How to Install 3.90 M33 Custom Firmware on Your PSP
So I have updated my PSP to 3.90 M33 already. It works kinda faster now. The installation process just only took me less than 5 minutes. So how did I do it? Well here you go. Another great tutorial for all PSP lovers out there.
The Requirements
Everybody must read this. This is very important. I don’t want any of you to brick your PSPs so please read this. Thank you.
- A PSP (Phat or Slim) with installed custom firmware 3.52 M33-4 or higher. My PSP had 3.80 M33-5 custom firmware.
- A USB Cable to connect your PSP to your computer
- 100% fully charged battery. This is just to be sure your PSP won’t turn off in the middle of the update. It’s also good if you have your PSP plugged into your AC Adaptor.
The Installation Guide
- Grab the 3.90 M33 installer pack and unzip it anywhere on your computer.
- Using the USB Cable, connect the PSP to your Computer then copy the UPDATE folder from your computer to your PSP in this directory: ms0:\PSP\GAME
- Disconnect your PSP from your computer then on your PSP XMB, go to GAME>Memory Stick then run the 3.90 M33 update. The update will verify your 3.90 eboot file and after verification you will be asked to execute the update. Execute it.
- Follow the instructions on the SCE updater. After the update, press X or O to manually reboot.
- Congratulations. You now have a 3.90 M33 Powered PSP.
February 6th, 2008 at 3:10 pm
@timontv: you have to downgrade it using a pandora service battery. then follow the 3,52 m33 guide writtenb by stylemo to upgrade to cfw and then you can update it to 3.71, then 3.80 and then 3.90m33
February 6th, 2008 at 1:23 pm
hi! i have a psp slim..with original firmware of 3.72, how can i upgrade to a custom firmware? thanks!
February 6th, 2008 at 10:54 am
i have a slim psp and 3.90m33 cfw but i dont have the skype, how can i get to recovery mode?
February 6th, 2008 at 7:01 am
can i install this with my official firmware 3.90?
February 6th, 2008 at 5:51 am
realy need help,i just upgraded to the new 3.90 firmware but i can’t install any m33 homebrews.how can i downgrade or install any homebrew?
February 6th, 2008 at 1:43 am
Thanks for the info Pongster.
February 6th, 2008 at 12:57 am
@Phantom Go to recovery mode.. as written by Dark_Alex:
“fake region should do the trick. You would loose the japanese icons, but will gain the skype one.”
Japan: no skype no go messenger
America: no go messenger
Europe: it has both.
Hope that helps.
February 6th, 2008 at 12:31 am
I don’t see skype on my psp slim after updating to 3.90 m33. Any ideas?
Thanks
February 5th, 2008 at 8:51 am
Thanks once again for the guide … after reading ur guide … it is not so scary to update my phat psp
Thanks alot
February 5th, 2008 at 12:09 am
[...] Phat PSP with 3.90 M33 custom Firmware installed. This one does not work on a PSP slim but don’t fret, because there is one [...]