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 18th, 2008 at 11:26 pm
I have the offical psp slim v 3.90, how do i change it???
ive been looking and im coming up with nothing. i know how to make the battery but everything else im stuck
someone please help me… email me at enrique.berriosjr@hotmail.com
March 18th, 2008 at 7:43 pm
Okay… thank u…
Please give me advise if I can exactly follow the guide from this website?
http://forums.exophase.com/showthread.php?t=3780
March 18th, 2008 at 6:57 pm
@kirbyboychoy: You can actually play games on your memory stick even if you are using Sony’s official firmware. But these are legal games like PSP demos. So if your looking for custom firmware, you will be needing Pandora’s battery.
March 18th, 2008 at 4:53 pm
I have a phat PSP that I upgraded tru network update thinking that it will allow me to play games from my memory stick. It is using firmware 3.93 now, I would like to downgrade it so that I can load the custom firmware, can anyone help me? Like give me step-by-step procedure? I would appreciate it if anyone can help me…
March 18th, 2008 at 9:23 am
@sanondail
thanks for the infos!
**currently using my psp at work, and not experiencing problems with 3.90 cfw.
March 18th, 2008 at 7:32 am
correction:
popsloader > sony’s PS1 to PSP emulator
March 18th, 2008 at 7:29 am
XMB > the PSP menu (whre u can access music,movies games 1seg etc.)
.ISO > a disc’s image, to put it simply its a virtual clone of a cd,dvd,umd
.CSO > a compressed .ISO but it can cause lag on some games like Gta LCS, GoW
Homebrew > programs made by “regular people” like us not endorsed by sony, programs that are just too fun to be OFFICIAL ^_^
plug-ins > can give the PSP new functionality such as taking screen shots and popsloader etc.
.prx files > plug-ins for your CFW enabled PSP, this goes to seplugins folder
popsloader > plug-in that allows you to use different versions of sony’s official PSP emulator for PSP
March 17th, 2008 at 8:43 pm
yeah! i made it! about the skype thing…will it have an effect on my unit if i change the “fake region”?? if there is…what is it?
@stylemo: thanks a lot for your guide! expect to have more peeps to patronize your site!
March 17th, 2008 at 7:14 pm
@all: although im a PSx fanatic, im still a newbie at PSP (just got my unit last january), and im a bit confused on some abbreviated words and terminologies, and their meanings. could you guys help me out? so that i can relate more to PSP. Thanks!
1. XMB
2. CSO
3. ISO
4. homebrew
5. other abbreviated words and terminologies that will help me relate more with PSP
@stylmo: this is a good site, especially for us who wants to understand PSP more “technically”! keep up the good works!
March 16th, 2008 at 7:20 am
@belly
God Of War
works great on my 3.90 m33-2
maybe you just have a bad dump/download of the game
also if you’re running a .cso file
decompress it back to .iso