Install PSP Custom Firmware 5.50 Prometheus add-on
Even with 5.50 GEN-D3 installed on your PSP, you won’t be able to play some of the newer games without proper patching or plugin to help bypass Sony’s new DRM which requires 6.20 OFW. Luckily, Liquidzigong created Prometheus Module so that users with 5.50 GEN-D3 firmware (meaning COMPLETELY hackable PSPs) can still enjoy the latest game releases without any patching involved. With this guide, I’ll be showing you how to install the 5.50 Prometheus firmware add-on.
For ease of identification, Liquidzigong says you can also call this release as 5.50 GEN-D4. For the purposes of this post I’ll be referring to this release as both 5.50 Prometheus and 5.50 GEN-D4.
Important: This only for hackable PSPs. Not sure? Read: Is my PSP hackable?
Update: The Prometheus-3 add-on is now available.
- A PSP with custom firmware 5.50 GEN-D3 installed. If your firmware version is below this, please update to 5.50 GEN-D3.
- PSP battery that’s at least 78% full
- Download: 5.50_Prometheus.zip
- Disable ALL plugins.
- Back up your save files (so that if they get corrupted, you still have backups)
How to install 5.50 Prometheus GEN-D4 add-on
- Connect your PSP to your computer
- Extract the 5.50_Prometheus.zip to your PC
- Copy the 5.50_Prometheus folder to X:/PSP/GAME/ on your PSP’s memory stick. (Where X is the drive that your PC recognizes your memory stick)
- On your XMB, go to Game > Memory Stick to start 5.50 Prometheus Updater
- Continue to install the official 5.50 Prometheus CFW when prompted
- After all process is complete, press X. Your PSP will reboot.
- Congratulations, you’ve just installed 5.50 Prometheus add-on on your 5.50 GEN-D3 or simply 5.50 GEN-D4.
Important: This release is currently 5.50 Prometheus v4. Stay updated by subscribing to our feeds.
Update: The Prometheus-3 add-on is now available.
After installing 5.50 GEN-D4, How about some Free PSP Games?
In case of problems you can go back to 5.50-GEN-D3, just simply the proper XGen updater again. If all else fails, you will need a Pandora Battery to revive your PSP.
You can post problems you’ve encountered here.
It allows you without any modules, plug-in situations like the game to run 6.20. Procedures have been in the PSP-1003 & PSP-2000 on the test successfully.
Known to the normal operation of the original ISO:
MGSPW (Prologue do not crash)
Not known to the normal operation of the game:
patapon 3 DEMO
Thank GEN Team. This version of the vast majority of files from the 5.50 GEN-D3, you can call it 5.50 GEN-D4.
Q: Why does the game start screen to turn red?
A: Yes, when adding the code to decrypt the original GEN-C is changed purple. In my firmware in a red, made in China.
Prometheus module and has been used to improve the game’s compatibility
Liquidzigong – Prometheus Module
Genyus – By GENTags: 5.50, 5.50 Prometheus, Custom Firmware, How to install 5.50 GEN-D4, How to install 5.50 Prometheus, Prometheus module
Ay yo atma. I know this might not be the best place to ask this but i have two questions…
1. Is there a way to play a video that is in .avi Format in my PSP??
2. Is there a way to open a .pdf file in my PSP??
I know that you can convert .avi to PSP to watch it. The program is called “XviD4PSP”. So technically it DOESN’T allow .avi files to play, but rather it converts them to a playable format. As for the .pdf functionality I am yet unaware. But if you do find out please let me know…I been looking for the same thing!
I’ve found a software named “Bookr” tht opens up .pdf files…
I’ve tested it and it works…though im still looking for tht .avi one
heh.. found bookr as well :D. Will do a post in a bit
Hey Atma, why the new Prince of Persia doesn’t work on this patch?
sorry can u help me?after i download the prometheus 5.50 and 5.50 gen d-3 my psp wont read the memory stick/duo and if i want to format it, it’s always says format error, any ideas?
Try formattng your memory stick on a computer. Looks like a bad memory stick.
So 5.50 Prometheus is like an update to 5.50 Gen-D3? If I update mine to Gen-D4, it should be able to play the newer games and old games right?
And thanks for posting this.
Yep. But some of the much older games (like those that came out in 3.xx era) seem to have problem with 5.50 GEN in general. At that point the only option is to juggle your firmware version (upgrade and downgrade).
is the PSN and PS store still still blocked on this firmware?
Yep. You can use a plugin that allows access to PSN however
umm sir slyv3rblade if i update to this version will i be able to play kingdom hearts birth by sleep? How are procedures ?and is there an english version of khbbs?
Yep, just make sure you have 5.50 GEN-D3 before installing the add-on. As for the english version for Birth by Sleep, that’s still in the works but a US release date has been announced so it’s just a matter of time 🙂
More info: http://atmaxplorer.com/2010/03/kingdom-hearts-birth-by-sleep-gets-us-release/
Hi… Uhm… 5.50 Prometheus seems to have a problem when I play YS seven. The problem is it has no sound when I play the game… Does this mean do I have to upgrade my firmware?
yo! i have a psp 2006 and its newer version is 5.03 GEN C. it is the blue madden edition. i use chick hen whenever i restart it. can it be upgraded to gen d3 and then to 5.5 prometheus? thanks.
Please check if your PSP is hackable or not before proceeding with any installation:
Ah yes, this means that you have to have GEN-D3 Final installed before you can add Prometheus right? Okay, this is my real question…
How would you know if you have D3 Final? There was another release in the Gen line saying that there was a ‘Final’ version of Gen D3. I installed D3 a few months ago, but I forgot exactly when, hence not knowing if I downloaded the Final version or the initial release.
Is there any way of knowing? Coz D3 Final has reports of not being able to play God Eater (not specified if this includes even the KH-something plugin fix). Is there a difference in the System Info stating I have the Final version?
There are 2 versions of the 5.50 GEN-D3 installer, one is the xgen v5 and the other is xgen v5b. The latter installs 5.50 GEN-D3 final. If you want to make sure, just run the installer again and it will install or reinstall the final version of 5.50 GEN-D3 for you.
Yep, God Eater works only with the prometheus module or the khbbs plugin.
Prometheus would’ve been a near perfect update if the older games weren’t affected. I have a couple of old games I love playing and I heard they would become incompatible with the Pro update. Also, I read that my current save games in D3 would be corrupted in Pro.
I’ve been debating whether to sacrifice old game compatibility as well as saved games non corruptivity with updating to Pro and losing all these.
Can you bring an end to my dilemma here? I mean, it would be of great help if I end my dilemma. Would Prometheus be able to play Phantasy Star Portable games as well as they did in D3? Would I be able to play Super Robot Wars Portable games as well in Prometheus? Monster Hunter Freedom United? Mana Khemia 1 and 2?
I wished there’s a compatibility list somewhere on this…
I had 5.50 GEN-D3, never had any prbs except I couldnt play MGS PW.
So I installed this prometheus update. Now everything is great, except for my XMB menu. It is very slow. Any ideas on how to fix it so it is normal speed again?
Try checking the speed on your XMB, press select and check to see if it’s set to default
Thanks man! Took me like 3 seconds to fix, now my XMB is at full speed again. I thought I was going to have to go back to GEN-D3, but its fixed thanks to your help
No prob :). It’s a common problem but not everyone realizes that the XMB has the fix for it 🙂
Just to make sure, This will update 5.50 Gen-D3 to 5.50 Prometheus v4?
hey gang i just install tha 4D add-on cause i cant play FF crisis core & kingdom hearts, so i try this one but for my bad luck it didn’t work. any one that can help me with this????
PS. of curse i had tha 5.50 gen3D before i install the add-on so you know!!!
PS1. tnx for tha post sylv3rblade.
You might have downloaded a “patched” copy of the games you want to play. Look for an unpatched copy instead.
tnx silv3rblade, but i don’t think that’s my problem, you see i have downloaded like 8 or 9 difrent backups of crisis core fron isos JPN,USA, to cso ripped, patched & unpatched, & i still haven’t make it work; For tha KHBBS i just downloaded two difrent, and the firts was a JPN “patched” that did work, but was on JPN so i dont understand it at all jaja, and i hade tha same prob with god of war, but a few days ago i purchase the backup from a guy that was patched ISO n’d works great, so what else can be my issue???
Wow that’s a lot. Hmm..I’ll check into things to see if there’s a fix for your problem.
tnx bro ill be waithing!!!!!
This is a great guide. Unlike many other guides this one is quite descriptive and has steps and requirements listed. Many other guides for prometheus v6 are made to “build upon” previous version guides and it ends up being very confusing if you have not been up to date with the scene for a while. Thanks a lot, keep up the good work!
So I installed this hoping it would fix my problem Im having. After I installed CFW on my PSP, GEN-D3, I noticed I wasnt getting any sound from my PSP, even when I connected my earphones. Is there any way to fix this. Im using a PSP 1001 btw
Sounds like a bad flash, re-run the XGEN Updater for 5.50 GEN-D3 and post the results here.
sir what’s happening to my psp? whenever i experience my battery getting low the home screen pops up automatically…help please
follow up question… and when i turn my psp off completely it doesn’t load sometimes, and i need to remove the battery and put it back again and turn it on again… should i update my firmware? i have 5.50 GEN-D3 already…
sounds like a bad flash.
Just re-run the XGEN Updater again to reinstall 5.50 GEN-D3 on your PSP.
do you think i should change my mmc? i noticed however that whenever i put pressure on the screen it goes to the home button, what do you think?
o_O try to change your MMC first. If it still persists, it might be a problem with your PSP.
hey guys, I just downloaded the 5.50 gen d-3 and installed it and now I’m trying to install prometheus, but when I press X to install, it does nothing. I have to reboot my psp so I can use it. But I can’t install the prometheus. Any one has a solution for my problem? thanks
thanks for this release, some japanese games like: Koihime Musou Wu Story requires this update.
i was wondering if they have shining tears in psp?
do u know to start a game in DSonPSP
whenever i start a game the screen gets stuck on white
hi sir? is there any risks in converting my 5.50 gen-d3 into this new firmware?
i’m afraid of bricking my psp
thnx.. ure immediate reply is highly appreciated
i have 5.50 gen d3 and i downloaded this add on and i still cant play gran turismo what should i do?
Odd. Are you still getting the Game Could not be started error?
If you are then you probably downloaded a copy that’s patched for a different firmware version.
DL the 5.00 M33 version here:
oooh hell yeah dudes you guys rock now i can play FIFA 11 on mah PSP :DDDDD
I have a PSP Fat and just upgraded from 5.00 m336 to 5.50 GEN-D3, then installed Prometheus. I tried a downloaded demo of Undead Knights, firmware version 5.50, and after loading the PSP screen, the PSP went back to the Home screen with the message “the game could not be started.” Does Prometheus even play newer demos, or does it only work on UMD’s? I don’t have any new ones to try at the moment. I tried WWE 2008 (firmware 3.52) and WWE 2007 (firmware 2.82) and both would freeze the PSP when I tried to play them. The PSP screen would appear, the initial in game loading screen would pop up quickly, then the screen would go black and freeze, no disc activity at all. I had to pull the battery to turn it off. GTA Vice City Stories, Sega Genesis Collection, and Thrillville (all firmware 2.81) all played fine, but my game save data was corrupt and could not be used. I have games 2.60 and under and those games and their save data all work fine. So is there something I can do, or some kind of GEN update coming soon?
The corrupt saves the usual trade off when upgrading your PSP’s firmware. :/ A lot of times, the fix is to simply copy over your saves with a backup you had before upgrading.
As for Undead Knights and any other newer games, try the Prometheus-3 module.
the game sound a bit fuzzy . is there any connection with the prometheus??
Try increasing your PSP’s clock speed or try a different copy of the game file.
My system info says I’m running 5.50 Prome-3. I did replace my corrupted game saves with backups and that worked, but copying didn’t work, I had to erase the files off of my PSP first. But it worked and thank you for the hint, that helped a lot. Undead Knights still won’t play, and my 2.82 and 3.52 firmware games still freeze the PSP. I don’t really care about these issues so much personally, I just wanted to see if I could find some newer firmware than the 3.52 I had been using. And maybe my info will help someone iron out the kinks for the next update for GEN.
i am psp 2000(5.50 gen d3) user…
i downloaded split/second game……
but it cannot play on my psp…
is it worked with prometheus???
what should i do??
Hey,,, I didn’t try it yet because i wanted to know if it will run ALL THE GAMES THAT GEN-D3 ran ???? Does it play most of the new and old games like assasins creed,,,, etc…. (which GEN-D3 ran?) ?
It will run all GEN-D3 compatible games. As far as I know, what GEN-D3 can’t run (this means older games), the Prometheus module can’t run either.
hey,, can we olso return back to 5.50 gen-D3 … IF YES,,, HOW ???
yep, just reflash using the installer for 5.50 GEN-D3.
Thanx Bro…..nd u knw wat…..
U ROCK !! 😀
split second velocity does not work evn in prometheus,,,,,, it just works for the 1st level,,,, and the other levels do not work,,,, a black screen appears after the loading of the other levels 🙁 ,,, PLEASE HELP
Can u gimme a link to the psn patch
Try PSNFucker. Weird name for the plugin huh?
Hey buddy, am playin a fifa 10 since last year. But now today, when am playing it, it lags/hangs for maybe half a second or so. It making the game boring. I tried formating the flash memory, the memory stick, and then reinstalled gen-d3 and copied my saves and iso file from backup. It doesn’t solve it. I also tried deleting the saves and then opening the game, but it still lags. What do u suggest?
What speed is your PSP running (check the XMB menu)? Also, is this symptom present in all other games or just fifa 10?
Is XMB MENU THE SAME AS VSH MENU? If yes, Then speed is at DEFAULT. its always there! And i only have fifa 10. Music is playing fine (fifa music), and when am playing in practice mode, there is no problem. Only when i play kickoff or manager mode. Il try and diferent memory card, and the original iso backup which i put on dvd. Il update you! Thanks
yep that’s it. Which speed? There’s a Game Speed and VSH Speed. Try setting Game speed to 333Mhz (overclock your psp). Don’t worry though, it’ll only drain more battery.
Both speeds are set at “default”.
Anyway, my memory card is the culprit. Its a chinese knockoff. 4gb stick. I tried a difrent one, it works ok.
I have of problem of playing games.
It is Midnight Club LA Remix.
My PSP can run the game but when to start a mission in career mode, it becomes freeze and shut down automatically.Last time before i upgrade my psp to 5.5.GEN-D3, everything is fine and i can play the game until the end.I love to play this game again coz it is great racing game and visual.
So, what i must do to over come this problem? Should i upgrade to 5.50 Prome 4?
I’m using PSP1000(fat) now and 5.50 GEN-D3.TQ
None of my games work now after updating this T_T
check you current firmware version, what firmware does it say you are on?
it says 5.50 Prometheus
Actually, all my games but MHP3rd work which is odd..
what is the most convineint firmware and add on you can recommend to me cos i planning to buy a psp
As of the moment, 6.20 TN-C and 6.35 Pro-A
just be sure to not buy PSP-GO/PSP-300x/PSP-200x(TA-88v3boards)….
i suggest you buy a PSP-100x/PSP-200x(TA-88v2 below boards)
I have 5.50 gen d(full) – I dunno which gen it is :/ If it’s d1/d2/d3 eh…
I wonder what this update will give me then.
Also I have problem with Silent Hill: Origins as intro movie stutters and even background video in main menu does.
Installing this update is necessary? Should I do it?
installed Prometheus with gen d3 so all my nephew and my two boys could play the newer games…works perfectly with The 3rd Birthday game. by the way done this upgrade with 5 psp 2000…all working perfectly. @ sylv3rblade..dude your heaven sent…many many thanks! God Bless! : )
Not a prob. Glad to be of help 🙂
have have upgrade to promethesous4 from 5.50GenD3. every game on mem stick now gets stuck on white PSP screen on loading.
can you please help.
Am using M33 no umd
have tried reflash but system just turns off.
is there a simple fix?
thank you for your help
That sounds like a bad flash on the side of prometheus. Have you tried reflashing using the Xgen updater (reinstall 5.50 GEN-D3)?
firstly thanks for your reply 🙂 much appreciated.
The issue is I have downloaded xgen updater but wont load from mem stick (gets stuck on white screen).
is it a case of pandora down grade required?
ha ha all sorted
tried earlier exgen version and hey presto got passed white screen.
now back to 5.50 (with out prometheous 4)
thank you so much after 2 days on web and trying everything and you solved.
No prob :).
hi.. I’ve PSP 1000 Phat with 5.50 promothus … when playing fifa 10 online.. the game is shutdown after a goal in celibration….. wht do i do? plz help
Update your prometheus module to Prometheus-4
I’m sure this isn’t the place to write down and thank you but honestly this I found to be the best site to guide you through what you have to do to upgrade your psp and firmware. I had absolutely no idea and was noobing about it until I actually sat down and read HOW to do it.
Thanks so much, with this last (prometheus) I can actually put several games into play!
Not a prob 😉
yo sylv3rblader i love how the comments are flowing w/ pleased cusomers but im in a dilemma ive got backups for my 3 memory sticks already im just not sure on this being reliable 100% because Liquidzigong on his site about this has a ton of bad comments and if so where can i download the 5.50 gen d3 since i wasnt the who updated it and is it downgradable love to hear from you and thanks!
For 5.50 GEN-D3: http://atmaxplorer.com/2009/12/install-psp-custom-firmware-5-50-gen-d3/
As for Monster Hunter Portable 3rd, you need to install the Prometheus-4 module after installing 5.50 GEN-D3
btw love it that your pic is Mio Akiyama from K-ON love her songs with the band ^^
and will it work on monster hunter portable 3rd?
NO COMMENT ABOUT THE MIO? ^^ tnx for the advice , btw when i play wwe raw vs smackdown at the start of the round the game freezes , i had to take off the battery just to fix it any advice?
I glossed over that bit :)). As for the freezing, either look for a copy that’s patched for 5.50 GEN-D3 or download a clean/untouched ISO and follow the patching guide here: http://atmaxplorer.com/2011/04/iso-tool-patching-guide/
^^ tnx all works fine now alll games and saved datas aint corrupted I CAN FINALLY PLAY MHP 3RD!!! 🙂 TNX!
Hi I have 5.50 prometheus-4 and Can not play some lego games. Is it upgradable to something new?? Thanks
Yep, there’s 6.35 Pro-B5 for you.
I HAVE A NEW PROBLEM MAY SISTERS PSP IS A 5.50 PROM IS IT UPGRADABLE TO PROM 4?
I think your new problem is that the capslock is stuck 😕 Yep. It’s upgradable.
YEAH SOMETHING INSIDE SNAPPED TRYIN TO FIX SO I DONT HAVE TO BUY A NEW ONE
hi thnks for the prometheus. i know this isnt the place to ask this but is there a english version of monster hunter 3?
Still no release of the english version of Monster Hunter Portable 3rd :/ But there is a translation patch available.
thnks for the reply. but why does dissidia 012 and KHBBS cant start. it freezes then shut down after the psp logo. pls help
You probably have a “patched” copy of both games, try looking for an untouched copy and try patching them yourself using this guide
ok thnks again dude
Hello. I have installed ver 5.50 Gen-D3 and the file name was xgen-550gen-final. After that I tried installing pormetheus but I couldn’t launch the installation because nothing happens when I press the ‘X’ button. I press it several times repeatedly and nothing happened. After that I tried installing the firmware again but when it comes to pormetheus, I can’t install it at all. Please help. Thank you.
Check your PSP’s current firmware version, does it say 5.50 GEN-D3?
Yup. My current firmware is 5.50 GEN-D3.
hello guys. i just updated my psp to 5.50 prometheus but i cannot still play patapon 3? anybody can help me? thanks.
i have now the 5.50 Gen-d4 but still when i played the monster hunter portable 3 in my psp it said “The game could not be started” plse. HELP!!!
You likely have a patched version of the game. Get a copy that’s untouched or has been patched for 5.50 GEN-D3/GEN-D4
The MHP3 that i downloaded is compatible with the 5.50 Gen-D3 and D4. By the way, what do you mean by untouched??
I would really appriciate if you give me the link where you downloaded your Monster Hunter Portable 3, may be it would for me 🙂
Untouched means it’s the original dump of the UMD, no modifications etc.
Currently uploading 🙂
Uploading the MHP3??? if so THANK YOU VERY MUCH!!!!
If you’re finish uploading it just post the link and i’ll download it 🙂
I have a PSP, 1000 fat and i started at 5.00 m33-6, i then went to 5.50 GEN-d(full), and finally 5.50 Prome-4. When i start an iso it loads the boot screen and the psp turns off. Help please im going on holiday and i need itt!!
Does this happen to all your isos? Regardless, just the prometheus module with the newer version here.
my psp just says 5.50 Prometheus just that no GEN-X, is it safe to update straight to 5.50 prometheus-4? and is prometheus-4 the same as prometheus gen-d???
Promethues-4 is the latest version of the prometheus module, you have the first release. Yes you can upgrade to prome-4
which do i download? for 5.00 m33, for 5.03 GEN-C, or 5.50 GEN-D3??
For 5.50 GEN-D3.
so you mean i can just go to 5.50 prome-4 straight? i dont have to go from 5.50 prome –> diff. version –> 5.50 prome-4?
Yes but if you want the more careful route, reinstall 5.50 GEN-D3 using this post then install prometheus-4 for 5.50 GEN-D3.
dude i have 5.50 GEN-3 and i disabled all plugins and then i successfully installed that 5.50_Prometheus.zip.
i was trying that WWE all star. i got stuck on the option of saving data for the game so i turned it off.
the problem is that it just wont start up anymore as in nothing on the screen just the green light power is on.
i tried to turn it on again and go to hard settings by pressing the right top button and holding the power button up. Still nothing.