How to Install PSP Custom Firmware 5.00 M33 on your PSP
This may be a little late but like I always say, it’s better late than never. Before we install this latest custom firmware, I’d like to give out a few notes on what joy you’ll be getting from this.
- PlayStation Network
- Sleep Timer
- USB Auto-Connect
- New theme
- Full-Screen keyboard has been added
- Full screen and interlaced TV-out option for PSX games on the PSP Slim and PSP 3000
Read the guide after the jump.
Now here’s what you’ve been waiting for, the simplest easy to follow guide that you’ll find on the web. Here’s how to install custom firmware 5.0 M33 on your fat and slim PSPs - no hack for the PSP 3000 yet.

Homebrew for everybody
Remember kids, do this at your own risk. I won’t be held responsible for anything that would happen to your PSP. If you don’t understand the guide or not sure of anything, ask by using the comment form below.
The Requirements
- PSP with previous custom firmware installed, at least 4.01 M33-2
- At least 75% battery, connect your PSP to an outlet via the Adapter.
- USB Cable
The Guide
- Download the installer pack I compiled here.
- Extract the file you have downloaded anywhere on your computer.
- Connect your PSP to your computer and copy the UPDATE folder you extracted to ms0:/PSP/GAME/
- On your PSP, go to the XMB menu and scroll to GAME > Memory Stick and run the 5.00 M33 update. Follow the onscreen instructions.
- After the installation, you’ll be taken back to the XMB menu.
- Grab a soda or something.
Don’t thank me for the guide, thank Dark Alex because without his hacking abilities, this wouldn’t even be here. And don’t forget to thank Sony for bringing us a cool handheld device.
UPDATE: For PSP-1000 a.k.a Fat PSP owners out there, 1.50 kernel add-on is already out. Read the installation guide here.
Tags: 5.00 M33, Custom Firmware, Custom Firmware 5.00 M33
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Every time I click on a link to install custom firmware, it says I need to have the previous version of the CFW. Is there really no way to install this without having to install a different CFW 12 times ? I really only want to do this so I can use remotejoy anyway … nothing else really …
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My sister recently bought a psp slim with a firmware version of 4.01 now unlike mine (3.71) which i easily unbricked using a pandora bat and upgraded to 5.00 m33-4 (thanks to your blog). how do i unbrick 4.01 so that I could play iso with it (i tried using a pandora battery but it doesn’t work)?
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i have the official firmware of 5.00, how do i change from tthat to the custom firmware of 5.00 m33 ?
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i took the cfw from another site and 1st updated to 5.00 and on starting the 5.000 m33 it says “data is corrupt”.now is there any way to get 4.01 cfw without pandora battery
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dude when i upgrade my version 4.01 m33-2 to 5.00 m33 or higher, it installs normaly but when i restart in the end it doesn’t start at all.. it’s some kind of brick i dont know. i can fix it with the pandora battery but i would like to have that upgrade done. can tell me what to do?
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