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Install Signed 6.31 Hen PRO + Prometheus ISO loader on your PSP

Oh look, 6.31 Hen now also has a signed installer allowing you to install 6.31 Hen without running the Minna no Sukkuri demo exploit as instructed in the original post. With Liquidzigong’s release of a signed 6.31 PRO, you can run it directly from your XMB.  Again, the Signed 6.31 will run plugins but not those that require kernel access (like those requiring 1.50) but for the most part, it will run the most basic plugins like Light VSH menu (included in this guide), screenshot plugin, etc.

Requirements for Signed 6.31 Hen PRO and Prometheus ISO loader

Installing Signed 6.31 Hen PRO and Prometheus ISO loader on your PSP

  • Extract the Light VSH menu file for your PSP model on your computer.
  • Copy the plugins folder directly onto your memory stick or the storage of your PSP Go.
  • Extract the file onto your PC
  • Copy the extracted folder to x:\PSP\GAME (x is your memory stick or the PSP Go‘s storage)
  • Extract the Prometheus ISO loader onto your PC
  • Copy the extracted folder to x:\PSP\GAME (x is your memory stick or the PSP Go‘s storage)
  • On your XMB, the 6.31 Hen installer and follow the onscreen prompts
  • Once you’re back on the XMB, press “select” to make sure the Hen menu displays correctly.
  • Follow this guide on how to install the Prometheus ISO loader on your PSP: Installing the Prometheus ISO loader on your PSP.
  • Enjoy your Free PSP Games :).

Update: Added installation of Light VSH Menu.  Why is it at the start of the installation process?  So you can immediately load it after installing the Signed 6.31 Hen.

Important Note: Be sure to check the Prometheus ISO loader compatibility guide
Important Note: You need an ISO folder in your PSP’s memory. Simply create one and dump your PSP ISOs/CSOs there.

A bit of warning, this Signed 6.31 Hen PRO does not include HBL (Homebrew Loader) so you may not be able to run plugins as some of them require kernel access.  Still if you’re just looking to load ISOs on your PSP then this is as simple as it gets.  If you still want to run homebrew applications however, I’d recommend the 6.31 Hen over this.


If you’re not on 6.31 OFW, follow this guide on how to upgrade your PSP to 6.31 so you can install Signed 6.31 Hen: HowTo: Upgrade your PSP to 6.31 OFW.

credits to Liquidzigong aka Virtuous Flame aka Vflame

If you’re on a different firmware, you may want to take a look at other Hen installations:

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Comments ( 73 )

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  1. kun1sak1 January 25, 2011 Reply

    I have a PSP 3001 6.30, but alredy modified to 6.31 PRO using the Miina no Sukkiri exploit since its release. Some undub, patched or modified games have some issues (like lagging or blink some animations) or don’t even launch at all. Then i should change to this one for more compatibility or something else? Well, using prometeus then going to the exploit is a bit annoying though, i don’t mind changing…

    Thank’s for the efforts, by the way!

    • kun1sak1 January 25, 2011 Reply

      Should i delete any files in my memory stick? The only thing i have modified since i got him, was the prometeus with the exploit and some savedata.
      Thanks again, and sorry for my bad english.

      • sylv3rblade January 25, 2011 Reply

        All you need to redownload is the Signed 6.31 Hen (and the Light VSH menu if you hadn’t previously installed it). Once that’s done, just follow the instructions in the post 🙂

        • kun1sak1 January 26, 2011

          Well, i did everything according to the instructions, and its working just fine. Some games just don’t even start, but I wait till the compatibility issues get settle playing other games, leaving the problematic ones to later.

          Thank you so much! I be around. =)

        • sylv3rblade January 26, 2011

          Do you have VSH working as well? In any case, yeah, we’ll be waiting for a Prometheus ISO loader update.

        • kun1sak1 January 26, 2011

          Yeah, VSH is working ok, i did just like you posted. Not issues whatsoever.

        • sylv3rblade January 26, 2011

          Good to hear :). Thanks for the input.

        • Brian July 14, 2011

          ok after reading everything above I am still not sure what to do lol sorry…
          I have a psp 3001 ofw 6.31 and use the mina exploit to get 6.31 pro and load using Prometheus and works fine for most isos.
          Now my question —> is there any way to make it permanent 6.31 pro without taking the chance of ending up with a brick in my hands?
          I would like to just turn on my psp and run Prometheus and play the game, is there any way to do that? also is there any way of running psx games on my version?
          Thank you for your time and help you rock

        • sylv3rblade July 14, 2011

          The CIPL flasher is meant to make this LCFW permanent but it won’t work for you since you’re on a PSP-3000.

  2. xenitnelavx January 26, 2011 Reply

    hi, can i use the iso loader on my psp running on 5.50 prome-3? i have some iso games that dont work in prome-3. im wondering if this would be a valid work-around.

    • sylv3rblade January 26, 2011 Reply

      No it won’t work, compatibility with games for 5.50 + prometheus-3 is much better than the Prometheus ISO loader. Since you’re having problems with prome-3, upgrade to prometheus-4. Also, consider getting isos that are either unpatched or patched specifically for 5.50.

      • xenitnelavx January 26, 2011 Reply

        i c. fw was originally prome-4 but a lot of csos/isos dont work. could you tell me more abt patch fw compatibility (like, is there an ol db of all psp isos patched for 5.50?). btw, i sent u a msg thru

        i appreciate your help and hope u could assist me further 🙂

        • sylv3rblade January 26, 2011

          Ah.. I’m currently having problems receiving mail because of our office’s firewall (so usually I get to read the mail when I get home).

          There’s really no list like this one for manually patched games because users do the patching and make it work for their firmware version themselves. The rationale for doing the patching is to bypass the built-in firmware check (DRM) in the game and allow it to run on your current firmware version. To do this, you need a clean/unpatched ISO file of the game you want to play and a plugin for your PSP called the ISO Tool. If you do this, there’s a 95% chance that the game will work on your PSP. Theoretically, it should work with any firmware but since Sony introduced multiple PSP hardware iterations and firmware versions, this just isn’t true anymore.

          Now if you don’t want to deal with patching things yourself, you have two choices: One is to have the prometheus module, prome-3 and prome-4 in this case, to decrypt and patch the game on the fly as it loads on your PSP. This, as you are experiencing is a hit or miss thing. The other choice is to get a copy of the game that’s already patched for your CFW version or lower.

          As an owner of a PSP Phat with 5.50 GEN-D3 and Prometheus-4, for the best compatibility, I always try to look for games patched for 5.00 M33. This way, I know it’ll work (hasn’t failed me ever since I started looking for 5.00 M33 patched games).

        • xenitnelavx January 26, 2011

          so prometheus decrypts isos as they load? what im experiencing is mostly a miss or miss thing lol.. but how do i know whether an iso is patched for 5.50? is there any indication on the file itself or from the source? i got all my files ol, so naturally they come from diff sources.

          i’ll reload prome-4, AND try to find this iso tool (do u have it here btw?). if it still doesnt work what else do u think i can do to rectify this issue?

        • sylv3rblade January 26, 2011

          usually a game is indicated as patched for etc etc (ie patched for 5.00 m33, patched for 5.50 gen-d3) from where you are downloading it. If it’s not listed as such, download elsewhere :).

          I would upload the ISO tool but the site is blocked from work :/ As for what else to try, try swapping game files with friends.

        • xenitnelavx January 26, 2011

          right. theyre all on prome-4 and all they play is monster rancher lol. thanks berimeni for the advise. keep on keeping on 🙂 ur doing the lord’s work.

  3. vectorbot January 29, 2011 Reply

    hi i’ve updated the pspgo to 6.31 Hen PRO + Prometheus ISO loader. Managed to get it running by following your instructions. Thankyou so much.

    But when I try to play games, namely TEKKEN or MHP3 via adhoc with my friends, it always prompts me “a Network error has occurred” (yes, i switched the wlan switch is on )

    • sylv3rblade January 29, 2011 Reply

      If I remember correctly, this is a known bug with 6.31 and 6.35, ad hoc. I’ll check with my sources. Also, now that I have a PSP GO I will test this myself.

    • sylv3rblade January 29, 2011 Reply

      Looks like it’s a problem with 6.31. I was able to connect my PSP Phat with 5.50 GEN-D3 and my PSP Go 6.20 TN-C in a battle.
      here’s a screenshot (checkout the names for the players):

      I would recommend downgrading to 6.20 ofw using the 6.20 downgrader then install 6.20 TN-C.

  4. Zee January 30, 2011 Reply


    So, I did everything what the instruction says but when I placed the .iso/cso file it says corrupted data. I already extracted the file and placed it in the ISO folder. So what could have possibly gone wrong? ^_^

    ( I got psp 3001 updated to 6.31)

    • sylv3rblade January 30, 2011 Reply

      Are you trying to load games via the XMB or via prometheus?

      • zee February 13, 2011 Reply

        uhhmmm, both actually. and both are not effective.

  5. Ryuuichi February 13, 2011 Reply

    Hi Blader,

    VSH menu doesn’t appear but my PSP displays 6.30 pro, any advice on the vsh menu?

    • sylv3rblade February 13, 2011 Reply

      Did you install the Light VSH menu included in the list above? If yes, check if the vsh.txt file has the right line of text to make it run.

      • Ryuuichi February 13, 2011 Reply

        Ok, fixed. thanks.

  6. Ryuuichi February 13, 2011 Reply

    To add on: I tried playing Valkyrie Profile Lenneth using the Prometheus Loader, the screen go black and shuts down, then when I turn it back on and try loading the loader, it says game corrupted, I immediately check the system info. What shock me is that it displays OFW 6.31, Any advice?

    • Ryuuichi February 13, 2011 Reply

      Nevermind I know why the game doesn’t work. Now the question is why the PSP change back OFW 6.31.

      • sylv3rblade February 13, 2011 Reply

        When a Prometheus ISO loader hangs, it usually takes the Hen instance with it. :/ We have to wait for an updated version for any bug fixes sadly 🙁

        • Ryuuichi February 13, 2011

          Ok, we will have wait for it then, thanks for the info.

        • Ryuuichi February 13, 2011

          Ok, one more question, can I use cwcheat with this?

        • sylv3rblade February 13, 2011

          yes, cwcheat has been confirmed working with 6.31 Hen

        • Ryuuichi February 13, 2011

          Thanks. Now all we have to do is wait for an update for fixes. 🙂

    • sylv3rblade February 13, 2011 Reply

      6.31 Hen unloaded when the PSP shut down. Also, there’s conflicting reports as to whether Valkyrie Profile Lenneth works with the Prometheus ISO loader. As listed in the compatibility list, it’s confirmed as not working:

  7. Ryuuichi February 13, 2011 Reply

    I posted a problem at ChickHen R2 page but it seems that the page having problem, I will just ask here. I have a PSP 2000 with hackable motherboard (HJ serial code) and OFW 6.31. Tried installing ChickHen R2 using the easy installer but it doesn’t reboot and system info remains unchanged. Any advice?

    • sylv3rblade February 13, 2011 Reply

      It could be your memory stick. A lot of ChickHen related problems are due to incompatible memory sticks.

      • Ryuuichi February 13, 2011 Reply

        I see… Oh well, I will just stick with the 6.30 Pro then. thanks.

  8. screamo February 21, 2011 Reply

    i tried signed 6.31, but it says the game could not be started. Can you please help me? Thanks

  9. screamo February 22, 2011 Reply

    6.31, do i need to upgrade it to 6.35?

  10. Phil February 27, 2011 Reply

    Hi sylv3rblade,

    I copied your steps (besides the Light YSH for PSP GO which I got from here, because the link provided is inactive:, but I’m still having irregular results:

    -Still nothing happens when I press Select.

    -631 HEN br Coldbird & VF, loads the PSP game opening slightly lagged, then goes into a black screen for a second, and then returns me to the XMB.

    The Prometheus ISO Loader appears to be working fine, although I have not tried to load an actual ISO with it, I was able to load and then exit the program without issue.

    Any idea if it’s me or the PSP Go?

  11. Phil February 27, 2011 Reply

    Here is how I have them placed:

    I tried the new file you provided, and received the exact same result.

    I really appreciate the help.

    • sylv3rblade February 27, 2011 Reply

      No, I meant for the light vsh menu plugin. Take a screenshot of vsh.txt file in the plugins folder

  12. Phil February 27, 2011 Reply
    • sylv3rblade February 27, 2011 Reply

      check the contents of the game.txt file:
      it should say ef0:/plugins/vshmenu.prx 1
      otherwise change it to make it so

  13. Phil February 27, 2011 Reply

    The contents were “ef0:/plugins/vshmenu.prx 1″.

    I deleted the ” 1″ and saved.

    Same result as before.

    • sylv3rblade February 27, 2011 Reply

      ahh I think I know the problem.
      vsh.txt not game.txt 🙁 and you need the 1 at the end (it signifies if the plugin is active or not)

  14. Phil February 27, 2011 Reply

    Here is both vsh.txt and game.txt, back to default for the link you provided above:

    • sylv3rblade February 27, 2011 Reply

      hmmm ok, I will admit now that is odd 🙁
      Try renaming the plugin folder to seplugins and the text on the vsh.txt file as well. If it doesn’t work, it’s probably a bug 🙁

  15. Phil February 27, 2011 Reply

    I guess it’s a bug then. So does that mean I can’t really do anything else? Do you think I’m safe to try the ISO Loader?

    Either way, thanks for the help.

    • sylv3rblade February 27, 2011 Reply

      Have you tried turning off your PSP then re-running the signed 6.31 Hen installer AFTER editing the vsh.txt file?

  16. Phil February 27, 2011 Reply

    Just tried it, and still the same.

  17. Phil February 27, 2011 Reply

    Thanks sylv3rblade.

  18. Phil February 27, 2011 Reply

    Stupid question, I can only run PSP ISOs on it, correct? Not PSX ISOs?

  19. cmyk March 1, 2011 Reply

    when i load my ISO, it becomes a black screen, does it mean the ISO is not supported??

  20. awesome March 27, 2011 Reply

    i tried putting nba2k11 and the screen goes black. what does that mean? i have activated hen and used the prometheus to load the game. 🙁

    • awesome March 27, 2011 Reply

      btw im using 6.31ofw any ideas?
      i also checked the compatible games and nba2k11 is compatible

      • sylv3rblade March 27, 2011 Reply

        You could be using a patched copy of the game. Look for an unpatched version

  21. jeffrey May 12, 2011 Reply

    please help me on my problem regarding on my psp 6.31 version. i can’t load my favourite game which is valkyrie….it turns black and sutdown, same as the other user,….hope you can help…tnanks.

  22. kot-artes May 29, 2011 Reply

    pliiiiizzzzzzzzzzzzz some one speeeeeeeeeeed pliiiizzzzz!!! 🙁

  23. Pirate Access June 17, 2011 Reply

    its working! TY!

  24. jeff July 7, 2011 Reply

    I followed this guide and my PSP says “6.31 pro” and I’m able to run an ISO -BUT- when I power off the PSP and turn it back on, it is back to 6.31…Why wont it stay henned? I don’t like having to hack it each time before playing an ISO. 🙁

  25. B4rt0 July 9, 2011 Reply

    Light VSH menu for PSP-2000 works also for PSP-1000, at least for me 😉

    Thank you for this great tutorial!

  26. laila July 13, 2011 Reply

    do we still need the demo from the original hen?

  27. Need Help August 3, 2011 Reply

    Hi, i have the 6.31 PRO on PSP 3000. i had problems with some games that would cause the screen to turn black and shut down the psp when you choose them on the Prometheus Iso Loader.

    will the Signed 6.31 Hen PRO solve this problem?

    also, do you recommened any better CFW that will solve my problem?

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