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 #47
    Shannon on December 25, 2008 at 4:27 am reply

    I would not have updated my PSP to 5.00 m33 without you, thank you.

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  2. Comment #46
    Bob on December 15, 2008 at 6:29 pm reply

    Thx for all the instructions and installer…u rox!

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  3. Comment #45
    Joe on December 14, 2008 at 12:40 am reply

    the game could not be started(80020321)
    I got this message once i had put it on my psp please help

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  4. Comment #44
    Joe on December 14, 2008 at 12:40 am reply

    the game could not be started(80020321

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  5. Comment #43
    jmu33 on December 12, 2008 at 11:44 pm reply

    i did it n now my i get an error sayin “the game could not be started(80020321)”…..help plz anyone

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  6. Comment #42
    sonn on December 10, 2008 at 9:08 pm reply

    am… before i heard, it needs pandora…but nw, i’m wondering if this method needs pandora?

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  7. Comment #41
    ratzfatz on November 27, 2008 at 2:31 pm reply

    Thank you very much for this awesome site. I updated from 3.52 m33-4 to 5.00 m33-3. Now everything works fine.

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