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 14th, 2008 at 7:10 am
Hi stylemo, keep up the good job! My problem is not about updating firmwares,though. I’ve already done that (finally!). The problem is an annoying error message I get (like this : a connection error has occured 80410702) whenever I tried connecting wirelessly through Game Sharing. Can you offer any solution?
Thanks.
June 8th, 2008 at 1:48 am
if i have a pandora battery what will i do? my friend have a custom firmware and its 3.90 m33 is that all i need?
June 7th, 2008 at 10:56 pm
@stylemo: my PSP firmware is 3.71 . Not 3.71 m33, just 3.71 official firmware
June 7th, 2008 at 10:31 pm
@ianlasco: If your firmware is on 3.90, then you really need Pandora’s battery. If you were on 2.80 I could help you without a Pandora. Sorry dude. If you have friends who have PSPs with custom firmware installed, you can ask them to help you. I could only help you if you have a Pandora battery.
June 7th, 2008 at 3:37 pm
sorry if i ask too much because i dont want to buy umd games.
can you teach me how to change ng OFW 3.90 to a custom firmware? i research some forums and they say that i have to use a pandora battery and a extra memory stick to custom firmware my psp but if i dont do it well my psp will become a brick and it will be expensive if it happens. can you teach me how to put custom firmware to my Official firmware 3.90 without using any pandora or memory stick. just my pc, usb and my psp? and i would like to thank you for the tips for the demo games it hep me temporary.. thank you a lot…
GOD BLESS!
June 7th, 2008 at 3:00 pm
how can i install custom firmware?
June 7th, 2008 at 2:30 pm
im online on yahoo messenger you can talk me there. here’s my ym id markryanlasco@yahoo.com
June 7th, 2008 at 2:28 pm
3.90 just 3.90 their is no m33 or anything just 3.90
June 7th, 2008 at 1:39 pm
@PSPn0ob: If you did not meet the requirements, it means that you can’t update your PSP to 3.90 M33. What’s your PSP’s current firmware?
June 7th, 2008 at 1:37 pm
@ianlasco: you need to install custom firmware on your PSP. What’s your current firmware?