PSP 3.51 M33 Custom Firmware Released
greg | July 14, 2007
Update: Experiencing problems with WiFi on homebrews? Then re-download the custom firmware package. Now bundled within the zip is ‘m33wlanfix.rar’ — it corrects this known issue.
Russian hackers, who call themselves the M33 Team, have developed their own custom firmware based on Sony’s official 3.51 release. Much like the work of Dark_AleX, you’ll receive all the latest and greatest features packed with 3.51, as well the remaining underlying weaknesses found in the 1.50 kernel. Enjoy the best of both worlds! There ain’t nothin’ to it but to do it.
The installation procedure closely resembles that of Special/Open Edition (SE/OE):
- If you are under official 1.50 PSP firmware, copy kxploitpatcher and kxploitpatcher% folders from “1.50only/” of this download to your “ms0:/PSP/GAME/” and use it.
- Once done it, or if you are under any Special/Open Edition, copy M33CREATOR folder to your “ms0:/PSP/GAME” (1.50fw) or “ms0:/PSP/GAME150″ (SE/OE)
- Download official 3.51 eboot, rename it to 351.PBP and place it on “ms0:/PSP/GAME/M33CREATOR/” or “ms0:/PSP/GAME150/M33 CREATOR/”
- Download official 1.50 eboot, rename it to 150.PBP and place it on “ms0:/PSP/GAME/M33CREATOR/” or “ms0:/PSP/GAME150/M33 CREATOR/”
- Go to Games/Memory Stick on your PSP, and execute “3.51 M33 CREATOR”. Once finished, it will go back to the XMB.
- Go again to Games/Memory Stick on your PSP, and execute “3.51 M33UPDATE”. You’ll have to press X to agree to the installation.
- When finished, press X to shut down and reboot manually.
- Enjoy your 3.51 M33 ;)
Thanks to everyone who emailed me; you know who you are. And most importantly, thanks to Team M33 for resuming the work of a legend, Dark_AleX.
FLASH WITH CAUTION. USE AT OWN RISK!
Download:
PSP 3.51 M33 CFW (with WiFi fix)
3.51 Update EBOOT
1.50 Update EBOOT
- source: pspx.ru







Great!!!!
i have the offical firmware 3.51 and im wondering how can i put this firmware on to my psp?
im dying to put my own ps1 games onto it like RE1 & Metal Gear FF ect plz help me i keep upgrading as soon as i find out theres new firmware out but can i use this firmware even know i have the offical firmware 3.51..?
wb plz
your screwed
what if u have firmware 3.50?
downgrade to 1.50
i dont know why people always upgrade to the latest official sony firmware, then ask help re-upgade to custom firmware. can’t blame to for their curiosity lolz.
you’re stuck @ 3.51 Sony FW, wait for someone makes a 3.60 or 4.00 downgrader. then upgrade to CFW’s.
my PSP originally had official 3.11 firmware, i waited months not to upgrade until these guys made a 3.50 downgrader using Lumines 1 game. im happy now with my PSP.
fw3.11 > 3.50 > 1.50 > 3.40 OE-A > 3.51 M33
wade can you tell me your email address so that we communicate better?>I have a 3.11 psp and i dont know what to do..can youy tell me what to do to get the 3.51 m33? thanks……my email is caredbl84@hotmail.com
to get a custom firmware from 3.50 do i first have to downgrade to 1.50 then get a custom firmware??
sorry dude your screwed=( no home brew if you are not on custom firmware
ive upgraded to this,but can’t run homebrew,can I downgrade to 1.5 again?,if so how?
Hello to every one. if somebody can give me the original files of systemctrl.prx and vshctrl.prx at the folder kn when you toggle USB (flash0) in this M33 FW Mod…please I beg….I’ve bricked my PSP bcoz of that USB Mod! Darn…but still i can go to the recovery menu….
I have firmware version 3.10 oe-a and i want to upgrade what do i do
need help, i’m currently using a 3.3 oea. was wondering how could i upgrade to 3.51 m33? plz advise.
Noob ask :p where’s the recovery tools ? and how can I play the iso game, must i cr8 a folder in game or in root just like a devhook
it keeps coming up as corrupted data plzzz help
Just gt Tiger Woods 08 and have found it to be for firmware 3.40 My psp is a TA-082 motherboard psp at Dark Alex’s 3.03 OE-A firmware version. Just wondering if i could do this upgrade to play my game or is htere a different upgrade 4 my psp.
how do i do the wifi upgrade???
I am in need of help i am running version 3.03 oe-c and i am wanting to upgrade can anybody help because i do not have a clue what i am doing thanks
yey
THE NEXT DARK_ALEX
lol some one beat alex to the punch. come on AMERICA are we going to let some Russians beat us at our own game?
dude dark alex quit. where have you been?
What are you talking about America? Dark Alex was based out of Spain. He is a student there…
… and his mother’s maiden name was Kurnikovova, right Rich?
all you guys are jokas, lmao…
who and wtf makes u guys tink his spanish or from spain or resides there?? lol lol
twats, wat makes you think that this aint even dark alex???
isit because you guys get this prog from m33 from a russian server???
elotrolado dot net
he aint spanish? oh, really?
I bet he is
Hes from spain dude, you gotta read a bit more, theres even an interview with dax and other developers where they talk about themselves
Why the shit does every american automatically assume that everything good comes from america? Seriously, americans are putting shame to us… americans. Damnit >_
Probably for the same reason people like you want to take 1 persons stupid comment and label a whole country by it. stop assuming anyones comments represent everyone else.
WOOT FIRST~ Nywayz… do you think this customer firmware will be reliable? It’s just fascinating to hear this great news… but I’m not cool enough to try this out immediately.. hmm nyone upgraded yet?
I installed this firmware an hour ago and all is working great…. only bug I have is when I thought I was selecting blue colour theme 4th from the top… it was actually suppose to be the ‘pink’ theme but ends up as being a ‘blue/pink’ theme… the rest are fine… otherwise this is a great custom firmware….
just as good as 3.40 oe-a
You need to go back to your mem card and Select 3.51 Updater then your done and you will be on 3.51
why would anyone that ever wants homebrew ever update to a non downgradeable firmware… You need to stop suggesting that, your probly po’d because you was one of those fools that decided to update yourself to 3.51 as protest against dax leaving. So suck it up and stfu.
Besides this CFW 3.51 pwns the official 3.51 over :P
Cheat Commandos Rock Rock On!
Can you go from 3.40 oe-a to this?
yes
FUK CW doesn’t work for it
Custom Firmwares LIVE!!! Great job team M33!!!
this was predictably going to happen but im a little shocked at how quick this has come, great work and keep up the good work especially when next CF come out!! :)
It came quick because dark_alex is M33 he just renamed himself because sony was sending him threating letters.
And who’s paranoid ass did you pull that one out of? Last I heard of Dark_Alex - he wanted to quit while he was ahead simply because he noticed what happened to the PS3 hackers.
I don’t think that’s the case, just changing his nick won’t make him less vulnerable. Unless he actually went to Russia and is working as a hermit… but he wouldn’t do that for us, would he??
lol noobs, hackers are hackers. if they get caught they weren’t good enough, they don’t stop just cuz “SONY” says so. if that was the case, since it’s AGAINST THE LAW to begin with, why would a hacker have started? there are plenty of ways to make his comp(s) look like it’s transmitting all his work from Russia. no real hacker would stop until he was physically put in jail. hacking is what hackers do. unless he got bored with the PSP and moved to other things. like the iPhone. i hear some hackers got a good hold on that thing too.
I agree with Marc Mozz.
I’ve just flashed this, I’ve tested it… generally, I would say quite thoroughly. It’s good.
It all works. The people who brick, I personally think are morons, who don’t know what they’re doing. But, there are different circumstances.
I am now a 3.51 M33 user.
any bugs please post.
Some people have been experiencing slight problems, in the xmb, like… photos, music, and movies freezing, and then shutting off.
But, I can say for myself, that I’ve been thoroughly testing it, and it’s all good here. I would say this update is totally safe, and I recommend it.
im in
Very nice. Great job.
any games need this yet?
No, not for a little while, yet.
I expect the BIG games coming to require it will be CastleVania Dracula X Chronicles, and God of War.
Tremendous stuff guys. Hope it stays strong and you stay with us release after release of official squirmwares. Dark_AleX you kept the psp thriving and I hope you have a great future ahead of you kid! Now I’m gonna get out my face on vodka in honour of team M33. Long live the PSP.
it contains a recovery mode??
Yes it does, it’s the same format as th OE’s
the only bug right now is the battery icon i think it was or the volume icon but it is good filmware i got it allready but everything work fine keep up the good work m33 and cheers for the users of 3.51 m33 kepp up the good work m33
Does the CW have the Recovery option like DA’s CW? All the good stuff that DA’s CW like:
Flash0
Flash1
Plugins?
Registry?
Recovery Eboot?
Yes, all of it.
And more, too. Don’t forget Sony’s official ISO loader, which is in 3.51 M33.
Long live these Fuckin Russian Hackers
My little Babushka?
Does the CW have the Recovery option like DA’s CW? All the good stuff that DA’s CW like:
Flash0? Flash1? Plugins? Registry? Recovery Eboot?
Yes yes and yes
wats the recovery eboot?
i dont got any in my 3.40 oe… it doesnt do anything
man that better be dark_alex who just responded -_-
No, it wasn’t me. As I am not DAX either.
And, I really doubt that was DAX either.
So what do you think of the new firmware Dark_AleX (m33).
IT KWL
Because maybe you created it and sent it to russia so you woul’d get in trouble, your secret is safe with me.
hey Dark_Alex. just wanted 2 thank u 4 all u hav done 4 the PSP. u almost single handedly kept it alive 4 not only 1000s of gaming fans but ironically sony aswell. sony should b kissing ur ass not hunting it. anyway all great people have 2 pass on the batton sum time right?[maybe ;) ]
this is kool… i am greatful to m33!
great great great work.u fuck the sony assssss.now u have to
brick 3.60.u rocks M33
..what?
I’d still wait..never heard of this M33 team..we’ll see how things hold up.
Hey, I for one, recommend upgrading. It’s quite good, and it’s so far reliable. I’ve not had one crash, or freeze, or anything. I’ve been checking out all sorts of things, music, video, homebrew, UMDs, and ISO’s. I’ve tested the recovery, as well as changing the CPU speed. Registry hacks and all. It all works, and I think you should update, but hey, you do what you want, OK?
im with you on that one ive been doing the same thing ive even checkd a couple of psx games all work perfect all my plugins still work like thy supose to so yeah go for it if any ones asking
Still going to wait, there appears to be bugs in it. I’ll wait for fixes to come for those so I can do it all in one shot.
can it run CSO + ISO’s?
Yes, if you’d read a bit more thoroughly… Well, I suppose I only said ISO, but yes, CSO works at level 9 compression.
Great Job M33 !!!! …I havent used this yet, still waiting it out awhile, I didnt like 3.40OE, I couldnt get half of my cso’s too load, so ill wait things out abit.
The only major bug I encountered is that WIFI in homebrew doesn’t work. So, no Pimpstreamer. I’m about to try Devhook + eLoader as a workaround.
Well, you have to understand, those homebrew apps and games were designed with different firmwares in mind. I’m sure we’ll see fixes and tweaks soon.
nice work but all i see is bugs . i think i’ll stick with dark alex for a while until i see some improvement in this custom firmware and i havent found any games that require firmware 3.51
What do you mean, “all i see is bugs?”
I don’t see any, other than Pink not being a selectable theme.
i won’t answer to you just read some of the comments:)
Stop being a cock! I’ve read ALL of the comments up to here, and there’s almost no mention of bugs, other than people asking about them.
Now I havn’t tried it yet, but probably will soon, dispite you piece of shit comments.
you must be blind . i just said my opinion but you stupid assholle can’t read because if you could youll see clear that in some comments people installed it and had problems.
this basically still IS Dark_Alex, it’s just a reverse engineering of his work, just like his work is a reverse engineering of Sony’s work, so in short, we’re still Sony based, just in a more kick ass fashion
plenty of ppl have reported bugs, however, others have reported not having bugs doing the same thing. remember, not everyone sets up their PSP the same, so some one trying something may not work for them because of the stuff they have loaded into it. so for the ones that everything did work for, they must not have the same things loaded, or they could even have more things loaded that could fix the problems by themselves. who knows. but i think you’re both noobs for not seeing the tons of comments going both ways. so choose for yourself.
you guys got skillz, respect.
w3rd
Great News!! Those good hacker make the word more beautiful and more economic. Thanks!!
Does it works with 3.40 OE-A can i upgrade using this firmare?
hiya its crap is there anyway to go back to 3.40e or not when you put themes on it it just crashes when you press the usb connection
Hey, just wait it out a while, the things you’re trying to do, can’t be done yet, because of the reason it used to not be able to be done on 3.40. Just give it a few days, and then you will probably be able to do what you want. If you really want to go back, then you’re basically going to have to get the 1.50 and 3.40, use the updmaker, and then put the DXAR, and all of the others into the recovery folder.