How to Install 5.00 M33-3 Custom Firmware on your PSP

We’re skipping the 5.00 M33-2 update and going straight to 5.00 M33-3. According to Dark Alex, here are the changes:

  • A bug was introduced in 5.00 M33-2 that made some games and homebrew not to work
  • PSN version check is now automatically bypassed without need of touching any setting

So basically, 5.00 M33-3 is better and less buggy. And now onto the very easy installation guide.

The Requirements

  • Your PSP installed with 5.00 M33-2 or 5.00 M33. Follow the 5.00 M33 here.
  • USB cable
  • Wifi - If you have wifi connection at home, you could do the update in one step. Just go the the Network Update on the Settings Menu and follow your instructions and your done.

The Guide

  1. Download the update package from any of the following mirrors:
    Mirror1: http://rapidshare.com/files/156743814/500m33_3.rar
    Mirror2: http://www.megaupload.com/?d=J2B220F8
  2. Extract the archived file to your computer.
  3. Connect the PSP to your computer and copy the UPDATE folder to ms0:/PSP/GAME/
  4. Go to your XMB and run the update
  5. Follow on screen instructions and wait.

Although you could install this update directly from previous versions (3.71 M33 to 4.01 M33-2), I did write this guide for noobs.

Thanks to Dark Alex for the custom firmware.

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  1. Comment #53
    ian on April 9, 2009 at 4:27 am reply

    the 5.0 mm-3 update bricked my psp! i figure u should kno this!

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  2. Comment #52
    b45678 on March 26, 2009 at 8:17 pm reply

    does the 1.50 homebrew thingy from 5.00 M33 still work?

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  3. Comment #51
    louis bead on February 6, 2009 at 2:05 am reply

    im noob… i dont know what my version is. someone email me at xm8soldi3r@yahoo.com i would greatly aprc8 it if someone would point me in the right direction

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