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.
June 7th, 2008 at 12:30 pm
i downloaded some .cso games. so how can i play them? do i have to convert the psp? upgrade? or downgrade it? coz i dont want to buy expensive games… pls help me… thanks
June 7th, 2008 at 12:21 am
@stylemo: Is there a possibility make my PSP bricked, because
I have not custom firmware installed already in my PSP, as there should be in the guides ‘Requirements’ section.
BTW, what does the ‘M33′ mean? (Custom Firmware 3.90 M33)
June 6th, 2008 at 11:21 pm
@ianlasco: what downloadable games did you try? If you’ve got the official firmware, only demos will work on your PSP. check this link for demo downloads. http://www.stylemo.com/2008/05/10/the-ultimate-list-for-psp-game-demos-downloads/
June 6th, 2008 at 11:17 pm
@PSPn0ob: Yes. You can use this guide at your own risk.
June 6th, 2008 at 7:30 pm
I have 3.71 OFW installed in my PSP. Can I use this guide to install 3.90 m33 Custom Firmware? If i can’t, how can I do it?
Thanks anyway
June 6th, 2008 at 5:53 pm
stylemo i need your help a bought a new psp slim and light this month and it has a version 3.90 OFW just 3.90, i try to install some downloadable games but it didn’t work. can you pls help me…
its a psp slim and lite ice silver and its a daxter pack.. salamat!
May 24th, 2008 at 2:58 am
Can anyone help me because when i start the program it just say “upacking done. please wait…” and it stops
April 24th, 2008 at 1:19 am
Kakeru, i had the same problem. you only need to reset all the psp setting before updating.
April 16th, 2008 at 5:39 am
i had a problem upgrading to 3.90m33…:(
it displayed message “unpacking…done” & please wait…and it went idle…waited for the whole night and still the same. what happened? help me please…
April 4th, 2008 at 11:22 am
@ariark: Congratulations! Welcome to the 3.90 M33-3 club.