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.
March 27th, 2008 at 12:00 am
dont use a .cso file, use an iso backup of GOW. if you use cso it will lag, dont ask, i dont know why, it just does..
March 26th, 2008 at 12:26 pm
Thx, em2x. I will do that thx. Says anyone whos got the GOW games. Does anyone found that the game is legging? I am using a 4G MS. Does that complicate things?
March 26th, 2008 at 7:34 am
if i have sony firmware 3.93 how do i install 3.90 m33
March 24th, 2008 at 11:02 pm
@Hazel
unless you have an updated pandora’s battery, where you can downgrade it straight to 3.71 m33, just google for Yellow_Rain, yellow_rain released an unofficial m33 cfw for the 3.93 so you can still play games from your memstick with 3.93 m33 =)
March 24th, 2008 at 8:11 pm
@HAZEL
@JAMOME
both of you guyz need pandora to make it to 3.90m33… or back to 3.71m33-2 or 3.80m33-5 only then you can upgrade to 3.90m33 cfw.
brick at ur own risk…
March 22nd, 2008 at 10:33 am
My PSP slim’s version is 3.93.. how can i downgrade it so i can install version 3.90M33?? do i still need to use the time machine? because when i tried using it, it wouldn’t start… so now i’m still stuck with 3.93…
March 22nd, 2008 at 3:00 am
stvlemo, thxs man.
but im’s still a noob with this things.
i’ll follow the instuction, and wait to see.
March 21st, 2008 at 11:45 pm
Hi All, I am new to your site. Its wonderful to be here.
I have a a query. I have a phat psp, ver 3.40 OE-A. How can I upgrade to firmware 3.90 m33?
Your reply is really appreaciated. Thanks.
Jamome.
March 20th, 2008 at 9:11 am
Have you read the requirements? It says 3.52 m33 or higher. Phat or Slim. Let’s do that math thing ok? You have 3.71 m33-2. You are trying to upgrade to 3.90 m33. Is 3.71 higher than the required which is 3.52? If that is TRUE then you could proceed with the guide man.
March 20th, 2008 at 6:11 am
i have the custom firmware 3.71 m33-2 and i want to upgrade it to 3.90 m33, but i dont know if this tutorial works fine directly from 3.71 m33-2 (with no risk,i dont want to brick the psp). thxs.