Custom Firmware 5.50 Prometheus for PSP-2000 and PSP-1000 *Updated*

Sunday, June 20th, 2010
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Update: Custom Firmware 5.50 Prometheus V2 has been released with increased compatibility. Download below.

Not forgetting PSP-1000 and PSP-2000 owners, has released Custom Firmware 5.50 Prometheus for PSP-2000′s (TA88v2 or less) and all PSP-1000′s. So putting an end to all that patching to get 6.20 Firmware games to work. Its very easy to install. From , just extract the CFW 5.50 Prometheus folder from the winrar archive over to your PSP memory card PSP/GAME/ and run the installer.

Source: A9VG

Custom Firmware 5.50 Prometheus Released.


Download: Custom Firmware 5.50 Prometheus V2
(Custom Firmware 5.50 Prometheus V2 - 216.9 KiB - 45,868 Hits)



Download: Custom Firmware 5.50 GEN-D3 Final
(Custom Firmware 5.50 GEN-D3 Final - 27.1 MiB - 1,498,528 Hits)


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  • shanicred

    i wish i culd do this with my psp 2000 nd its hackable but i cnt cuz i mite brick nd cuz i droped it nd the right side of the umd door got broke off nd im trying to put back in….any help its a limited edition daxter 2000 psp

  • robfiley

    will this make the MGSPW game work now on 5.50 GEN D3.Hope it does cheers

    • Keyblade Spirit

      With this you won’t be on GEN anymore. It’s a new CFW if I understand correctly.

      • Yoshi King

        I think this is just a modified version of GEN…as it would seem that you patch GEN D3 to play any 6.20 games without the need of going through all that tedious work

      • rodi

        on the release site it says that it was made using mostly gen. it says to “think of it as gen-d4.” its very similar.

  • NaVii

    working fine for me PSP 1001….played ratchet and clank size matters and tekken 6

    • iGEN

      If Tekken 6 works I’m good.

  • http://pspslimhacks.com/ PSPFan

    Yep didn’t brick my PSP, I’ve added a video of my install so its all cool. Everything seems to work.

    • microberry1

      You know, pspfan, why dont you use the Hide MAC Adress feature on youre cfw, instead of hiding it like how you did?

      • iGEN

        Yeah… Ummm… That would be smart. :P

      • magorem

        May be because his CWF doesnt have that option…. i havent tried it yet

      • microberry1

        It does, in the recovery menu, trust me.

  • rodi

    awesome.

  • hpvivek_goku

    guyes…..any news on cfw for 5.03 above…???

  • iGEN

    Would this work if you already decrypted a game? Or do you have to run it clean?

  • Deadx93

    Does not work for mod racers nation, i still have to use a patch

    • rodi

      works for me. i can run it straight from the disk now.

  • Neo Cyrus

    Works for the last PSP game released, Naruto Shippuden Ultimate Ninja Heroes 3.

  • microberry1

    Hmm, so this does’nt make gen-d3 any more stable now, does it?
    I don’t think it would, but can anybody confirm this?

    • Yoshi King

      well, I’m able to play Metal Gear Solid: Peace Walker without those dammed patches and I can play BlazBlue Calamity Trigger just fine. Also, all my plugins work as of now

  • true_gamer9

    can anyone confirm this. before this, i had installed gen-d3 and because it cannot play previous save game, i change to gen-d2. if i upgrade to gen-d3 and then upgrade to this, does the save game problem fixed?

    • iGEN

      Probably. Or you can use D2-D3 switcher.

      • iGEN

        NVM don’t use the switcher. All your saves should work.

  • orestes

    yeah…
    if we install this prometheus … will the “gen-d2 to gen-d3 switcher” works anymore? in case some games need gen-d2 to play …

    and, after install … the prometheus file can be delete from psp/game folder?

    • iGEN

      After installing prometheus, you don’t need to use the switcher anymore.

  • Pendragoon

    I wonder if this will be the CFW that finally gets me to upgrade from 5.00 m33-6?

    • iGEN

      It allows more compatibility with newer ISOs… :/ Your choice I guess.

      • gennaro494

        Just download patched verision of the iso,cso..I have all the games that supposed to have problems with..they all work fine with Gen D..so i guess only use if you don’t have fixed iso,cso’s..then it will benefit you

      • yukinaze

        i have a Custom Firmware 5.50 Prometheus and i install Prince Of Persia Las Arenas Olvidadas.
        not working….
        :(

        PLEASE PSPGEN Make a 6.20 GEN….

  • timboy67678

    u do realize some of the Prx’s are illegal to have due too copyright pspfan?

    if sony found out u had them on the server, u could be sued :(

    • skyend

      this….

      • timboy67678

        is sparta :p

      • iGEN

        IS MADNESS!

        Nah just kidding. As soon as you install CFW, you pretty much are doing something illegal.

      • RockerZ6613

        Half True!
        CFW is originally enables homebrew.
        If only you download and rip games thats illegal
        but it is OUR psp Not Sony’s.
        So technically we can do what we want with our psp.
        Sony can kiss my A**.

  • skylinekid17

    so you need to be on cfw 5.50Gen-D3 for this to work? My PSP bricks when I go from 5.00M33-6 to 5.50Gen-A lol

  • piku2008

    I can’t able to download the Custom Firmware 5.50 GEN-D3 is there any problem …..

  • centurrion

    WIth using PSPIdent i get the following from my PSP:
    Motherboard: TA-085
    PSP Version: Slim v1.0

    It currently has CWF: 3.90 M33-3 on it.

    How do i install this new CWF??

    • iGEN

      Wow, that is OLD. Upgrade to 5.00 M33v6, then upgrade to 5.50 GEN-D3.

  • Skyline969

    Alright, I didn’t bother to read the other comments. However, will this Prometheus firmware allow my saves to be loaded without registering as corrupted?

    • iGEN

      Yeah. It replaces the pegasus.prx.

  • Yellowhound

    For anyone wondering it can’t play games that are already patched so if you rwant to play a patched game you’ll need to un-patch it first

  • gennaro494

    So let’s get this straight..if you got 5.50 GenD, and you got patched games that work of the known games that don’t work..Naruto..Modnation..Metal..etc..
    Don’t put this in because it would make my patched games that do work on Gen D..not work..
    So to everyone that has Gen D..and running all games no problems..
    Do not install..? am i right?
    thanks

    • iGEN

      If you have patched (decrypted) games, then don’t install it unless you want to unpatch the games. If you are on any firmware below GEN-D3, don’t install it. If you are using D2-D3 switcher don’t install it. If you have unpatched games install it. It only renders a few games not working.

  • gennaro494

    Thanks IGEN…for clearing that up

  • gennaro494

    I was just told this..please let me know if this is right…someone?

    it wont do anything to your psp other than no need for patched games. But if u choose to upgrade, your already patched games will still work.

    So this won’t affect any patched games or unpatched?? make up my mind..

  • Holy_Knight

    I know this is based on part of the GEN firmwares, but is it better than D3?

  • orestes

    so if somehow we have lots of patched games, this “upgrade” wont do any good…
    then probably we gonna see another “Switcher” program… to switch from “prometheus to gen-d3″ lol

    some ppl hardly can tell if the iso/cso are patched … wasted bandwidth downloading the games, ended up cant play it because of this prometheus thing…

    at least gen-d3 have a switcher to gen-d2 …

  • N3M0-kuchiyose

    Nice work. In laymen’s terms, U don’t need to patch the eboot to play just rip the .iso and fire it right up… There are soooooo many game decrypters and patchers out there for D3 it’s getting a little ridiculous. Instead searching for patches and the like this could be considered a “One cfw plays all” firmware…

    Great job Liquid.

  • lharvince

    My patched Harvest Moon Hero of Leaf Valley still works!

  • gennaro494

    So what happens when Gen D gets an update eventually??
    can we go from Gen D, to prometheus..back to Gen ?..

    thanks

  • A.D

    Can we somehow downgrade back to m33 cfw by using hellcat recovery flasher without bricking the psp?

  • A.D

    Is it possible to downgrade to other cfw from this cfw using hellcat recovery flasher?

  • gennaro494

    Prince of Persia still not working with promotheus..
    error 8002013c

  • gennaro494

    ModNation Racers works,
    Naruto Shippuden Ultimate Ninja Heroes 3 works,
    Metal Gear works..is this game worth trying to fix anyway?? PoP?
    Prince of Persia The Forgotten does not..why is this?? bad iso?

    • evonracer

      just get the patch! I DID lol

  • Pingback: NEW CFW Prometheus? « XBOX, XBOX 360, PS2, PS3, PSP, & MORE! – Your source for the latest in console modding.

  • magorem

    Can i use the Hellcat thing to go back to 550 b2? because i think thats the one with less errors on the cfw

  • yukinaze

    NOT WORKING Prince Of Persia Las Arenas Olvidadas on my psp 2000 i have a Custom Firmware 5.50 Prometheus…
    :(

  • gennaro494

    every other game working, except that Prince of Persia..still have to use the Kbbhs patch for that game..other than that..everything else working fine..

    but then again..everything worked fine before with Gen D3..so basically if you have patched games already and everything working fine..just leave alone..
    if you don’t have patched games then get this..and remember Prince of Persia will need the KBBHS patch either way..

  • roldan862000

    Unofficial PSP CFW 5.50 GEN-D4 has just been release to the homebrew community . PSP Custom Firmware 5.50 Prometheus v3 was develop and release by PSP CFW Developer liquidzigong who decided to release a third version of his new PSP CFW to the homebrew community called PSP Custom Firmware 5.50 Prometheus v3 . This PSP CFW uses files from PSPGen CFW 5.50 Gen-D to make it more compatible with newer game and offer more compatibilty for newer games . Unofficial PSP CFW 5.50 GEN-D4 / 5.50 Prometheus v3 was not develop by PSPGen but by a chinese CFW developer named liquidzigong who is trying to make a CFW compatible with the latest PSP Games . SO if you are looking for a PSP CFW that will let you run more of the latest game on your PSP , Then CFW 5.50 GEN-D4 the unofficial version by liquidzigong will do just that.>>(update)both CF 5.50/5.03 Prometheus v4 has been released.. google it.. hehe

  • gennaro494

    ok #36..nice post..
    but where is it? no link..nothing on this site yet?
    i’ve seen it too..maybe they waiting for official?? lol
    you or anyone try it yet? Gen-D4….

  • evonracer

    works great for latest naruto and MGSPW game psp thanks mang!

  • gennaro494

    so what works great??
    D3? D4? Promethues?
    please explain..
    works great could mean so much…lol

  • Exclusivied

    The only thing i wanna know is if you can downgrade back to gen after installing it, untill i find that out im sticking with gen >,<

    • roldan862000

      u cant downgrade back dude..

  • roldan862000

    patapon3 demo still doesnt work.. sob sob..
    i was force to upgrade to OFW6.20 just to try it.. will use pandora later.

  • orestes

    install prometheus… when you wanna go back to gen-d3 .. just copy back the cfw and run the gen-d3 app … you will be back to use it

    • roldan862000

      ul install full cfw5.50 d3,

  • Gunner89

    This works fine for games, but when ever I get on the Playstation store, I get the error 80551001. I’m using PSN lover on a PSP 1001. It was working fine when I was on GEN-D3. Anyone know how to fix this?

    • Linoleumman

      I too have a PSP 1001 and ever since I installed this I can’t get on PSN even though I have psnlover. I used recovery flasher to go back to just Gen D-3 and now I can’t sign in to the PSN it’ll automatically sign me out.

      In retrospect it wasn’t worth it at all. Oh wells you get what you pay for which in this case is nothing.

      • orestes

        relax… im sure there will be a fix later…
        just keep on giving feedbacks about bugs and other problems after using this cfw …

  • microberry1

    Hmm, in the recovery menu, does it still say gen?

  • ColorblindMonk

    Sometime after getting this my PSP somehow semi bricked, so I’ll be fixing that soon.

  • lharvince

    Prince of Persia working fine with me

  • roldan862000

    CFW 5.50 Prometheus MOD-1
    This mod installs you :
    *Game Categories v12
    *PSNLover v1.1
    *Alternate VSH Menu 6.1
    *Screenshot Plugin
    *New Prometheus Recovery-Menu
    you can run now in Recovery Menu a Homebrew/PSX game in the path ; PSP/GAME/HOMEBREW/EBOOT.PBP insteat of PSP/GAME/RECOVERY/EBOOT.PBP
    *Savegame FIX (Saves are now working)
    cant post d.link, i think its forbidden here

  • aian

    does 5.5 prometheus can also be used to ofw 5.5?

  • aian

    crap for making mistake upgrading to ofw 5.5. is there any possible means to downgrade since it was from 5.03?

  • Shinobi-Bojan

    will this work on psp 1000 5.00 m33-4??any one help please

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