Installing PSP custom firmware 3.90 M33-3

datePosted on 11:46, April 15th, 2008 by yk

Installing Custom Firmware 3.90 M33-3. This article assumes that you have custom firmware (OE/M33) installed on your PSP and want to upgrade to version 3.90 M33-3.

If you have OE/M33 firmware lower than 3.52 M33 please start from Section A.
If you have OE/M33 firmware greater than 3.52 M33 and lower than 3.52 M33-4, please start from Section B.
If you have OE/M33 firmware greater than 3.52 M33-4 and less than 3.90 M33, please start from Section C.
If you have OE/M33 firmware greater than 3.90 M33 and less than 3.90 M33-3, please start from Section D.

Downloads:
(DL.1) Custom firmware 3.52 M33
(DL.2) Custom firmware 3.52 M33-4
(DL.3) Custom firmware 3.90 M33
(DL.4) Custom firmware 3.90 M33-3
(DL.5) Official firmware update 1.5
(DL.6) Official firmware update 3.52
(DL.7) Official firmware update 3.90

Section A – Install custom firmware 3.52 M33

Files to be downloaded and extracted:
(a) Custom firmware 3.52 M33 (DL.1)
(b) Official firmware update 1.5 (DL.5)
(c) Official firmware update 3.52 (DL.6)

Steps to install:
(A.1) Copy the folder M33CREATOR and its contents to your PSP’s memory sticks’s /PSP/GAME150/ folder (eg. Z:/PSP/GAME150/).
(A.2) Rename Official firmware update 1.5 (EBOOT.PBP) to 150.PBP.
(A.3) Copy the file to your PSP’s memory stick’s /PSP/GAME150/M33CREATOR/ folder (eg. Z:/PSP/GAME150/M33CREATOR/).
(A.4) Rename Official firmware update 3.52 ((EBOOT.PBP) to 352.PBP.
(A.5) Copy the file to your PSP’s memory stick’s /PSP/GAME150/M33CREATOR/ folder (eg. Z:/PSP/GAME150/M33CREATOR/).
(A.6) In your PSP, browse to your Memory Stick and run the program 3.52 M33 CREATOR.
(A.7) After it completes, run the the program 3.52 M33UPDATE.
(A.8) Your PSP is now running custom firmware 3.52 M33. You can now delete the folder M33CREATOR folder from your PSP.

Section B – Update to custom firmware 3.52 M33-4

Files to be downloaded and extracted:
(a) Custom firmware 3.52 M33-4 (DL.2)

Steps to upgrade:
(B.1) Copy the folder M33Update4 and its contents to your PSP’s memory sticks’s /PSP/GAME150/ folder (eg. Z:/PSP/GAME150/).
(B.2) In your PSP, browse to your Memory Stick and run the update (the icon has a grey background, with red letters saying 3:33:33 in the foreground).
(B.3) Your PSP is now running custom firmware 3.52 M33-4. You can now delete the folder M33Update4 folder from your PSP.

Section C – Install custom firmware 3.90 M33

Files to be downloaded and extracted:
(a) Custom firmware 3.90 M33 (DL.3)
(b) Official firmware update 3.90 (DL.7)

Steps to install:
(C.1) Copy the folder UPDATE and its contents to your PSP’s memory sticks’s /PSP/GAME/ folder (eg. Z:/PSP/GAME/).
(C.2) Rename Official firmware update 3.90 (EBOOT.PBP) to 390.PBP.
(C.3) Copy the file to your PSP’s memory stick’s /PSP/GAME/UPDATE folder (eg. Z:/PSP/GAME/UPDATE/).
(C.4) Go to Recovery mode (Power off your PSP by holding the power button for 10 seconds. Turn on your PSP while holding the right shoulder button to go into recovery mode). Revert your kernel to 3.52.
(C.5) In your PSP, browse to your Memory Stick and run the program 3.90 M33.
(C.6) Your PSP is now running custom firmware 3.90 M33. You can now delete the folder UPDATE folder from your PSP.

Section D – Update to custom firmware 3.90 M33-3

Files to be downloaded and extracted:
(a) Custom firmware 3.90 M33-3 (DL.4)

Steps to upgrade:
(D.1) Copy the folder UPDATE and its contents to your PSP’s memory sticks’s /PSP/GAME/ folder (eg. Z:/PSP/GAME/).
(D.2) In your PSP, browse to your Memory Stick and run the program 3.90 M33-3.
(D.3) Your PSP is now running custom firmware 3.90 M33-3. You can now delete the folder UPDATE folder from your PSP.

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17 Responses to “Installing PSP custom firmware 3.90 M33-3”

  1. Geestreet on July 5th, 2008 at 9:50 pm

    Thanks to your short and simple instructions, I’ve successfully upgraded my CFW from 3.71 m33-3 to 3.90 m33-3. Big thanks!!!

  2. yk on September 30th, 2008 at 3:11 pm

    Glad the instructions worked for you Geestreet :).

  3. oli on October 16th, 2008 at 7:02 am

    Really good instructions but how do I do C.3, Revert the kernel??? I’ve got it in recovery mode, that’s all.
    The rest has all worked fine.
    ?????????????????????????????????????????????????????

  4. yk on October 16th, 2008 at 10:39 am

    Hi oli,

    C.3 is just copying files into your memory stick. Do you mean C.4?

    Revert your kernel to 3.52, once you get into recovery mode do this:
    (1) Choose option “Configuration ->”
    (2) Make sure the third options says “Game folder homebrew (Currently: 3.90 Kernel)”.

  5. yk on October 16th, 2008 at 10:40 am

    Sorry oli, the last line of my previous comment should say: Make sure the third options says “Game folder homebrew (Currently: 3.52 Kernel)”.

  6. [...] you have followed the instructions in my previous post Installing PSP custom firmware 3.90 M33-3, please start from Section [...]

  7. enzo on April 2nd, 2009 at 5:16 am

    i cant download DL.7 from its site do you have another link where i can download it for free? thanks man i really appreciate it if you can post another link thhanks again

  8. yk on April 2nd, 2009 at 3:58 pm

    Hi enzo, I just tried to download DL.7 and it is working fine for me. What error did you get?

  9. enzo on April 3rd, 2009 at 6:27 am

    every time i try to download DL.7 from PSP-hacks the file download stops downloading in about 7% and from there it cannot be processed and a dialog box pops out saying that the download expire and its pretty weird because when i was downloading Dl.7 the estimated time ticks about 7 hrs and 30 minutes and so… but the file size is only 24.45MB… i also try downloading other stuff but is works normally except for the DL.7 from http://www.psp-hacks.com/file/1406 thanks man it will really help me a lot if i could make my phantasy star portable work for my slim with CFW 3.71 m33-3 that i would like to upgrade to 3.90m33-3

    cheers

    enzo

  10. enzo on April 3rd, 2009 at 9:21 am

    this was the error i was getting internet explorer cannot download PSP_390_FW_UPDATE.RAR from http://www.psp-hacks.com the connection server was reset.

  11. yk on April 3rd, 2009 at 10:19 am

    Hi again enzo, it is weird that you are having problems downloading the file. Can you try this link:
    http://www.esnips.com/doc/18e5043a-5ff3-4f55-9e21-d43e4690028f/PSP_390_FW_UPDATE

    Are you behind a web proxy of some sort?

  12. enzo on April 9th, 2009 at 9:42 pm

    im sorry man im kind of not the IT guy and im not really technical regarding computers and date encryptions maybe i am behind a web proxy im in the UAE right now and net connections here are quite strict so maybe its one part of it… i dont really now well any way ill try this site now and ill reply as soon as i get it moving thanks for the big help man i really want to upgrade my psp because i hear theres a lot of new good games coming..

  13. enzo on April 9th, 2009 at 11:06 pm

    WOW thanks ive downloaded it now ill be upgrading my psp hope everything works on perfectly many thanks man cheers!

  14. yk on April 9th, 2009 at 11:59 pm

    Good luck enzo, hope all goes well for you. Keep us updated.

  15. enzo on April 10th, 2009 at 2:45 am

    man how can i revert back my FW to 3.52 i am now at c.4 in the m33 recovery menu where can revert it back? thanks man sorry for the troubles

  16. enzo on April 10th, 2009 at 3:33 am

    man thank ive got it working hahaha i just continued upgrading it without puting it back to 3.52 thanks

  17. william on September 15th, 2009 at 11:05 pm

    will the 1.5 homebrew that works on the 3.52 CFW still work with the 3.90 upgrade

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