3.71 M33-2

 

Custom M33 Firmware

Custom PSP Firmware 3.71-M33 update 2 for PSP Slim and Lite and PSP fat.


Requirements:

  • A PSP Slim or Fat with 3.71 M33.

Details:

  • Adds the ability to change CPU speed, Play PS1 games, play Homebrew games and apps, load legal ISO backups, load CSO’s (Compressed ISO files) and run emulators etc.

Change Log:

  • - There was a bug that caused corruption when writing files of more than 32256 bytes using usb flash.
    The bug has been corrected, and now the implementation is as reliable as it was when it was based on 1.50 kernel.(tested with a full restauration of a dump)

    - Psp Slim: a functionality to let the charge of battery when connecting a usb cable has been added. This feature is based on Noobz plugin code. By default is not enabled, you can enable it in recovery. Note that the charge of battery may be delayed some seconds since the moment you plug the cable.

    - After installing this update, program at /PSP/GAME/UPDATE will always be executed on 3.71 kernel, despite configuration.

    - VSHMenu: vshmenu will not be executed when onscreen keyboard is active, to avoid the lost of the select button function in the keyboard. An option to reset the psp has been added.

    - VSH plugins are not longer executed anymore in recovery mode, that was the cause of pseudo-bricks.

    Note about two bugs remaining:

    The WLAN network error, and the PSP Slim psx game change of brightness.
    These two bugs are copyright of Sony :) happens too in OFW.

    The WLAN network happens when there is no network available, so not a big problem.

Download: (all files are required)

Instructions:

  • - Copy the program to /PSP/GAME/UPDATE
    - If you have 1.50 addon, make sure you have the kernel of game folder configured to 3.71, or the program will not even start.

Source:


47 Responses to “3.71 M33-2”

  1. waz shah Says:

    when i try to do the update 1.5 it says no need to update your ver. is 1.5

  2. PSP-Fan Says:

    Thats because your running the official 1.50 update. You need to run this in 3.71 M33 custom firmware. Make sure you put the update in the GAME folder and run the M33-2 update ok.

  3. Billy Says:

    Hey, I a total noob when it comes to installing all this, bought my psp slim two days ago, and it has a fresh 3.71 install downloaded to my psp. Where do I start? Tried installing this and it spit back “The game could not be started. (80020148)

  4. Brian Says:

    I too am a total noob at this. i jsut bought me the new slim and upgraded it to 3.71. What do i do next? How do i go about from ofw 3.71 to cfw 3.71 m33? pls.. much help appreciated. Thanks.

  5. PSP-Fan Says:

    Brian / Billy …. See this thread here http://pspslimhacks.com/easy-installer-for-universal-unbricker/

    Try that to get onto custom firmware ok.

  6. slim-psp(lattymadha) Says:

    can i install 1.50 addon on my slim psp?(3.71M33-2).

  7. PSP-Fan Says:

    No 1.50 kernel doesn’t work on the PSP Slim… yet.. Thats just for PSP Fats

  8. pimp4lyphe Says:

    how do i update 3.71 M33 to 3.71 M33-2?
    i need step by step help (newb here!)

  9. Deetox Says:

    I have cfw 3.71 M33-2 installed on my psp slim. Am i able to play ANY ISO backups on it? If anyone can shed some light on what this firmware can do, please tell.

    Cheers in advance!

  10. v3n0m Says:

    i can play us ans eu psp game under 3.71 m33-2, just hit select scroll down to umd driver, i think and select sony np9660 driver.

  11. hteinlynn Says:

    how do i watch dvds on my psp?

  12. arlace Says:

    hi.. could anyone teach me or send me a step by step instruction to convert my psp slim 3.71 to m33-2.
    coz guys i love those add features… tanx!!!!!

  13. PSP-Fan Says:

    arlace please check our forum. http://pspslimhacks.com/forum/

  14. ratchetxys Says:

    what? i didnt got what is that kernal u speaking of…
    i just before 3 days bought from amazon psp slim silver pack (1GB=DAXTER+FAMILY GUY) with 4 GB MS…
    and i got a friend with fat psp. so with all of my things for psp, how i can make my psp slim to version 3.71 m33-2, plz help me! send me a massege to ratchetxys@gmail.com plz plz plz!

  15. ratchetxys Says:

    now i got every little thing about upgrading updating pandora magic, every thing. i know how to do it all! only one thing remain…what is that kernal u speaking on? and how to get to recovery menu…

  16. ratchetxys Says:

    waht is the changes from 3.71 M33?

  17. psp slim beginner Says:

    hello, i just bought a new psp slim,what should i do in order to play the downloaded game in memory stick… any website can guide step by step to do it?

  18. MIKE NEEDS HELP!!!!!!!!!!!!!!!!!!! Says:

    Somebody help me please i need help by making 3.71 to 3.71m33 please emial me

  19. MIKE NEEDS HELP!!!!!!!!!!!!!!!!!!! Says:

    email me at torich21@yahoo.com

  20. PSP-Fan Says:

    Mike please dont spam, refer to this section for help.

    http://pspslimhacks.com/psp-tutorials/

  21. PSP-Fan Says:

    All if to get to 3.71M33 is here psp slim beginner

    http://pspslimhacks.com/psp-tutorials/

  22. ttyler Says:

    so i have a v. 3.71 slim how do i upload this because i wanna be able to load iso

  23. psp slim newb Says:

    I have cfw 3.71 m33-3 on my psp slim, and the newest legal ISO games such as syphon filter logans shadow and manhunt 2 always hang on me when i try to load missions. is this a cfw problem or is it my psp slim problem?

  24. I NEED HELP BADLY Says:

    GUYSS for the experts here, PLZ HELP..im at 3.52 m33-4 rite now nd i put the update folder in game. but when i click on it to update to 3.71 m33-2, it goes for a while nd says the game cood not be started nd gives sum confusing errors….PLLZZZ HELPPPPPPPPPPPPPPPPPPP:’(

  25. PSP-Fan Says:

    You need to install 3.72 M33 first, this is just an update for 3.72.

    Go here: http://pspslimhacks.com/psp-firmware/custom-m33-firmware/371-m33/

  26. xbox360 sucks Says:

    I GOT A PSP SLIM……DO I NEED ANY PANDORA STUFF FOR THE FIRMWEAR TO WORK OR CAN I JUST UPLOAD ON THE PSP SLIM…………..

  27. Caligula the Great Says:

    Hello all! I would really appreciate some help with my issue… I am planning on getting a PSP Slim soon, and I have come to find out that the firmware can’t be downgraded without messing up things (: ability to update official fw, etc.) and I wanted to run a homebrew app called descent PSP. It is the ported descent game DOS/DX1. Anyway, I wanted to know how I would run it on there without hindering myself from updating the official FW ow screwing the thing up. Thanks in advance for the help!

    GO HERE FOR DESCSNT PSP WEBSITE:
    http://soucali.com/pspnews/modules/news/article.php?storyid=297

  28. Adam Tran Says:

    um i just got a psp slim for my birthday but i accidentely updated the firmware to 3.80 but i want to dongrade but i dont know how to can you please help me. like do i need a pandora battery to downgrade it?
    or can it be done like updating?

  29. Cordo Says:

    crap i did the same thing too, waiting on for answers, do i need to upload this frim whare, or buy the battery online for the hack, i want nes .. snes, n64 on my psp slim 3.80 damit .. hehehe plzz help

  30. colosalblack Says:

    PLEASE HELP!!!!
    I have official sony firmware 3.71. How do i get custom fimware withot downgrading it?

  31. Kevin Says:

    i just got a psp slim and i wanna kno how to get 1.50 kernel if i hav a v. 3.71 and how do i put it ?

  32. harpreets Says:

    Hey guys, who ever updated 3.80 firmware on there psp slim, can be downgraded. I did it yesterday yes u do need to create a pandora battery and stuff. I can play CSO and ISO files straight from my psp.

  33. peter Says:

    plz help i run a psp with 3.71official firmware and i want to upgrade to 3.71 custom firmware can any of u help without having to make pandoras battery

  34. dedas Says:

    hey! a newb here! i bought psp last night from some store and it says that my psp version already is
    3.71 m33-2. Then does it mean that my psp was already updated?

  35. Koji Says:

    hi. I have attempted to upgrade my version 3.71 slim psp using the universal unibreaker easy installer. I am using a mac that runs on leopard and there seem to be some issues. Is there a way to do the upgrade with just the slim psp, a 2G memory card pro duo, and the original slim battery?

    thanks

  36. psp Says:

    i have version 3.71 and i want to make it m33

  37. sukhy Says:

    hey guys im new so where do i find the download file

  38. nintendo rulz Says:

    hey evry1, luv the site, already helped me so much. i have a fat psp with 3.71 m33-2 on it. i have daedalues and snes and nes emulators but they wont work on my psp. i had 3.30 oe prior to 3.71 m33 -2 and i want 2 know why 3.71 m33 -2 wont let me play these. can any1 help me fix this? do i need a 1.50 kernel installer for 3.71 33-2? if so can u tell me how to install and where 2 get from many thnx in advance.
    pls send answers to sililidility@gmail.com

  39. lee Says:

    i am having a problem with my psp slim and light i got it dec last year it is 08 now and i want to play homebrew stuff and i tried what is on offer yet there was no good it says it wont run ideas people please ps i have standard factory set 3.71

  40. emmanuel Says:

    anyone mind telling me where to d/l the firmware cause there only one link to the source which i dun understand the language

  41. Ali Says:

    FAKE!

  42. Preston Says:

    I bought a 4 GB for my modded PSP Slim w/ 3.71 M33-2. I accidently reset somthing, so it starts that game and doesn’t load/ My 1 GB works, but my 4 GB doesn’t! Can someone tell me what there Recovery Question are set to!

  43. t-hell-t Says:

    i have 3.71 m33. what do i do from here? email me back plz

  44. E-Jul Says:

    i have 3.71 m33-2 and it’s awesome…what version is very best and awesome??? Thankz!!!

  45. E-Jul Says:

    how to downgrade or upgrade with easy way??? Please give me step by step…from eboot (whatever version) where want to place it,frimware…also where want to place it and what should i do after that…show me how to do it,begining from first step to last step…if you don’t mind”"”

  46. Doodness Says:

    Hooray for 5.01 m33

  47. zwob Says:

    hi



Leave a Reply