Installing Custom Firmware 5.00 M33-6. This article assumes that you have custom firmware (OE/M33) installed on your PSP and want to upgrade to version 5.00 M33-6.
If you have OE/M33 firmware lower than 3.52 M33 please start from Section A.
If you have OE/M33 firmware equal or greater than 3.52 M33 and lower than 3.52 M33-4, please start from Section B.
If you have OE/M33 firmware equal or greater than 3.52 M33-4 and less than 4.01 M33, please start from Section C.
If you have OE/M33 firmware equal or greater than 4.01 M33 and less than 4.01 M33-2, please start from Section D.
If you have OE/M33 firmware equal or greater than 4.01 M33-2 and less than 5.00 M33 please start from Section E.
If you have OE/M33 firmware equal or greater than 5.00 M33 and less than 5.00 M33-6, please start from Section F.
If you have followed the instructions in my previous post Installing PSP custom firmware 5.00 M33, please start from Section F.
Downloads:
(DL.C.1) Custom firmware 3.52 M33
(DL.C.2) Custom firmware 3.52 M33-4
(DL.C.3) Custom firmware 4.01 M33
(DL.C.4) Custom firmware 4.01 M33-2
(DL.C.5) Custom firmware 5.00 M33
(DL.C.6) Custom firmware 5.00 M33-6
(DL.O.1) Official firmware update 1.5
(DL.O.2) Official firmware update 3.52
(DL.O.3) Official firmware update 4.01
(DL.O.4) Official firmware update 5.00
Section A – Install custom firmware 3.52 M33
Files to be downloaded and extracted:
(a) Custom firmware 3.52 M33 (DL.C.1)
(b) Official firmware update 1.5 (DL.O.1)
(c) Official firmware update 3.52 (DL.O.2)
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.C.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 4.01 M33
Files to be downloaded and extracted:
(a) Custom firmware 4.01 M33 (DL.C.3)
(b) Official firmware update 4.01 (DL.O.3)
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 4.01 (EBOOT.PBP) to 401.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 (or any kernel above 3.52 like 3.90). Exit the Recovery mode.
(C.5) In your PSP, browse to your Memory Stick and run the program 4.01 M33.
(C.6) Your PSP is now running custom firmware 4.01 M33. You can now delete the folder UPDATE folder from your PSP.
Section D – Update to custom firmware 4.01 M33-2
Files to be downloaded and extracted:
(a) Custom firmware 4.01 M33-2 (DL.C.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 M33-2.
(D.3) Your PSP is now running custom firmware 4.01 M33-2. You can now delete the folder UPDATE folder from your PSP.
Section E – Install custom firmware 5.00 M33
Files to be downloaded and extracted:
(a) Custom firmware 5.00 M33 (DL.C.5)
(b) Official firmware update 5.00 (DL.O.4)
Steps to install:
(E.1) Copy the folder UPDATE and its contents to your PSP’s memory sticks’s /PSP/GAME/ folder (eg. Z:/PSP/GAME/).
(E.2) Rename Official firmware update 5.00 (EBOOT.PBP) to 500.PBP.
(E.3) Copy the file to your PSP’s memory stick’s /PSP/GAME/UPDATE folder (eg. Z:/PSP/GAME/UPDATE/).
(E.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 4.01. Exit the Recovery mode.
(E.5) In your PSP, browse to your Memory Stick and run the program 5.00 M33.
(E.6) Your PSP is now running custom firmware 5.00 M33. You can now delete the folder UPDATE folder from your PSP.
Section F – Update to custom firmware 5.00 M33-6
Files to be downloaded and extracted:
(a) Custom firmware 5.00 M33-6 (DL.C.6)
Steps to upgrade:
(F.1) Copy the folder UPDATE and its contents to your PSP’s memory sticks’s /PSP/GAME/ folder (eg. Z:/PSP/GAME/).
(F.2) In your PSP, browse to your Memory Stick and run the program M33-6.
(F.3) Your PSP is now running custom firmware 5.00 M33-6. You can now delete the folder UPDATE folder from your PSP.
Posted on 18:32, February 4th, 2009 by 
Posted in 
Yk my firmware is 4.01 m33-2 then i upgraded it to 5.00 m33-6…but when I run the games it says error…what should I do?
What is the error message that is displayed?
my firmware is 5.00 m33-6 but i get the message ‘the game could not be started’.
Which game are you trying?
Modnation racer.
The original version of modnation racer doesn’t work with 5.00 M33-6, you will need to search for a “fixed” version.
Okay thanks alot
well this sucks :/ my R button does not work and the screwws are in to tight so i cant fix it so i cant upgrade :/
my psp was “unlocked” by a guy., and he used his “magic” memory stick, and he pushed some buttons and now the psp is unlocked but it has a 3.71 m33-2 firmware..
and i dont know where is the folder “eboot”.. is it normal?
ehm, and if it is normal, can i update my firmware following your instructions?
because i dont want to broke my psp =/
hey bud i open d rar file but cannot extract it
some diagnostic messages pop up
When I start the 3.52 M33 Creator it said File 1.50.PBP couldn’t be opened. What do I do?
dv: If your psp is currently running CFW 3.71 M33-2, you should be able to upgrade.
Delz: The rar file that you downloaded is incomplete/corrupted. Try to download again.
Johnny: Did you rename the Firmware 1.5′s eboot file to 150.PBP as described by the steps above?
Yep same 5.00m33-6 and still get game cannot be started 800…….. etc error
Hey thank you very very much.
This is soo well written and clear. I managed to upgrade my psp firmware.
BTW: m33-6 link is broken. Here is another link: http://ifile.it/qjkfg0o
Just wanted to express my utmost gratitude to you, yk. I was updating my PSP-1000 for my girlfriend so that she and I could play SNES games together, but it’s been so long since I’ve installed any CFW, I didn’t even know where to start. Then I stumbled upon your guide and voila– simple, painless process with absolutely no problems. You sir, are a credit to our race! =D
Thanks for your comment, Andrew. Hope you and your girlfriend have fun!
when i try to install 5.00 M33-6 i get an error. i am currently using 4.01 M33-2
Hi mm, may I know what is the error message that was shown to you?
yk, you’re a legend! Not all the download links worked for me, but you can find the files easily elsewhere, and absolutely perfect instructions.
haven’t played a game that doesn’t work using this now (i’m on 5.00 M33-6), including Peace Walker. I’m now fully up to speed, thanks very much!!!
Sofort Kredit…
Thank you a lot for giving everyone an extraordinarily superb possiblity to check tips from this blog. It really is so kind and stuffed with amusement for me and my office fellow workers to search your website really thrice in one week to learn the lat…
how do i revert my kernel, i dont know what that means
please help fast.
Hi P12, after getting into Recovery mode, do the following:
(1) Choose “Configuration”
(2) Toggle line saying “Game folder homebrew (currently: x.xx Kernel).
Man! This is awesome tutorial! Have read everything 2 times before trying and started on A and finished with F. Everything was smooth, dot to dot, thanks a lot