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 14th, 2008 at 1:32 pm
Ok the thing wasn’t bricked after I had the guts to actually reboot it. I simply needed to go into the recovery menu and set it to boot 3.52 rather then 1.50. Sorry this was my first time doing it. You should really add that somewhere inside your 3.52 guide.
March 14th, 2008 at 11:47 am
I have a psp with version 3.02 oe-b custom firmware. I decided to update it to the newest firmware. So first I updated to 3.52 then to 3.52-4. Then I proceeded to update to 3.90. The tutorials say the update can be done as long as 3.52-4 is installed. I checked the firmware version before I starting the 3.90 and it said 3.52 m33-4. So I deleted the previous m33 update files put the 3.90 install files. I ran it from the psp. First it said:
unpacking… done.
then it said
Please wait…
Right now it is stuck at this step. What should I do? I haven’t turned it off and its still at the “Please wait” spot right now. What should I do next? Anyone have any advice? Is it hopeless and have I bricked it?. I followed the instructions perfectly.
March 14th, 2008 at 12:44 am
mga boss san ba ko pde makakuha theme ng apple para 3.71 cfw… thanks!
March 14th, 2008 at 12:21 am
I think that I am going to stick it out till a 3.90 M33-3 comes out. I played several games today, and only got one freeze and shutdown.
GOW does not work well on my 3.90 M33-2. It freezes pretty early in the game.
Thanks for the M33-2, your blog is super helpful.
March 13th, 2008 at 7:19 pm
The 3.90 M33 you used here is the same one from Dark Alex. I suggest you revert back to 3.71 M33 if you are having problems like that. But I think God of War requires 3.90 and higher firmware.
I’m having problems too. Like the PSP freezing and the screen going black when I’m playing need for speed. So I think it’s the 3.90 M33 isn’t stable yet.
March 13th, 2008 at 6:27 pm
The system froze and shut down during God of War, but since it is working today, I figured I would be daring and installed 3.90 M33-2.
3.90 M33-2 is on my PSP, I got 3.90 M33-2 from Dark Alex and 3.90 M33 from you.
March 13th, 2008 at 5:50 pm
Hi Stylemo,
You know what is weird? today my PSP is working fine. God of War is fine, and there were no problems at startup.
I was expecting the same problems as yesterday. Is there any explanation as to why it would work fine today and messed up yesterday?
It may mess up later, but for now it is normal.
ps- I was not using any custom themes.
March 13th, 2008 at 10:30 am
Hey belly, does your PSP boot to the XMB? If it does not, I think it’s a semi-brick. Maybe you were using custom themes when you made the update. Am I right?
You can’t update to 3.90 M33-2 if you don’t have 3.90 M33. The best way is to revert everything back. I’m gonna write another instructional procedure on how to do it - like Howto revert your custom firmwares to 1.50.
Stay tuned. And thanks.
March 13th, 2008 at 7:57 am
ps- I did not use the M33-2 from here, but from Dark Alex.
pps- my 3.90 M33, as said before, is from here.
March 13th, 2008 at 7:55 am
Well I started at 3.40oe-a, then went to 3.51 M33(to -4), then 3.71 M33(to -4).
After going through the procedure on this page to make it 3.90 M33, the PSP just went dark and I have been having to set it on recovery mode, in order for it to work.
Right now the PSP is turning on, will play the UMD movie,but shuts down when I try to play an ISO.
I reformatted the memory card after I was able to get the PSP to turn on in regular mode. I also tried to upgrade to 3.90 M33-2, but that failed as well. I was hoping that this would sort out the bug that is causing my PSP startup/ISO problems.
Please help before I make the next move, I don´t want to damage something that may only need slight tinkering.