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PlayStation 4 OFW 9.00 Jailbreak released, can reportedly affect PS5 consoles as well

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There's a new PlayStation 4 exploit in town--PS4 scene developers have released pOOBs4, a new kernel exploit that affects consoles on firmware 9.0.0. According to the pOOBs4 GitHub page, this exploit functions a little differently from previous PS4 jailbreak methods; you'll need a dedicated USB drive with the jailbreak software, which you'll insert into the system at a specific time during the process. The hack can also work on the PlayStation 5, claims the team, but triggering it isn't possible yet, and they recommend that users don't try to mess with their PS5 consoles until more information is available on how it affects that system. Currently, any PS4 that is on OFW 9.0.0 or below is exploitable using this method.

In this project you will find an implementation that tries to make use of a filesystem bug for the Playstation 4 on firmware 9.00. The bug was found while diffing the 9.00 and 9.03 kernels. It will require a drive with a modified exfat filesystem. Successfully triggering it will allow you to run arbitrary code as kernel, to allow jailbreaking and kernel-level modifications to the system. will launch the usual payload launcher (on port 9020).
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The instructions and jailbreak file itself can be downloaded from the source below. Useful homebrew tools Mira and GoldHEN have also been updated to work with this new version.

  • You need to insert the USB when the alert pops up, then let it sit there for a bit until the ps4 storage notifications shows up.
  • Unplug the USB before a (re)boot cycle or you'll risk corrupting the kernel heap at boot.
  • The browser might tempt you into closing the page prematurely, don't.
  • The loading circle might freeze while the webkit exploit is triggering, this means nothing.
  • This bug works on certain PS5 firmwares, however there's no known strategy for exploiting it at the moment. Using this bug against the PS5 blind wouldn't be advised.
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:arrow: Source
 
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MasterJ360

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djpannda said:
wait why are people stating they already updated their ps4?
Doesn't everyone have multiples of consoles in their Closet, one to play with and the other one frozen in time to wait for a valid Jailbreak?
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Little brothers/sisters, cats, dogs, imaginary friend, step mom/dad, that lego block we stepped on, and that crazy kid Timmy seem to always update our consoles by accident.
 
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djpannda

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MasterJ360 said:
Little brothers/sisters, cats, dogs, imaginary friend, step mom/dad, that lego block we stepped on, and that crazy kid Timmy seem to always update our consoles by accident.
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sure for everyones primary console..!!
but what about the 2nd ps4 pro that you have sealed in the closet?
 
Goku1992A

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djpannda said:
sure for everyones primary console..!!
but what about the 2nd ps4 pro that you have sealed in the closet?
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It boils down to finances some people are only able to afford 1 system. I have 6 switches, 2 PS4, an Xbox One and 2 gaming laptops and let's not forget about the handhelds ... not many people have the luxary of having multiple systems so they have to have only one... do they play online or jailbreak and stay offline. (Really hard decision) PS3 era I ended up wiping off my CFW PS3 just to play online and I ended up buying another PS3 in the future with CFW

To me personally OFW > will ALWAYS be better than CFW.

CFW is nice don't get me wrong where you can store all your games and updates but playing online with your friends CFW doesn't offer that
 
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anhminh said:
So if I stay at 5.05 fw, do I still need backport for everything I play or what?
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Just wait... if the stability is better on 9.00 it's better you update I'm waiting I'm not in a rush this is pretty good because all PS4 games can be played now so this is a big accomplishment!

If I didn't own the majority of my PS4 games I would be all over this
 
godreborn

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anhminh said:
So if I stay at 5.05 fw, do I still need backport for everything I play or what?
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backport, yes. it's suggested you stay on 5.05, because it's less of a hassle and it's still more stable. once you update, unless you make preparations, there will be no going back.

edit: this is what I was told by developers themselves as I'm on one of their discord channels.
 
spotanjo3

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radicalwookie said:
Affect PS5 also?!
Any news on this?
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Read this from the first page:

The hack can also work on the PlayStation 5, claims the team, but triggering it isn't possible yet, and they recommend that users don't try to mess with their PS5 consoles until more information is available on how it affects that system. Currently, any PS4 that is on OFW 9.0.0 or below is exploitable using this method.
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Teddyfay

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I have been trying to jailbreak my 9.00 ps4 for a little while now but I keep running into a "kernel heap" error. it's a dead end, tried over and over, same message every single time. Any help? please.
 
tabzer

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What HB is recommended for PS4? Does it have advantages over Switch? Is it better off mining crypto with, or does something like RetroArch give it a better emulation experience.

Any way to play PS3 games? Lol.
 

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    yall im torn... ive been hacking away at tales of phantasia GBA (the USA version) and have so many documents of reverse engineering i've done
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    I just found out that the EU version is better in literally every way, better sound quality, better lighting, and there's even a patch someone made to make the text look nicer
  • TwoSpikedHands @ TwoSpikedHands:
    Do I restart now using what i've learned on the EU version since it's a better overall experience? or do I continue with the US version since that is what ive been using, and if someone decides to play my hack, it would most likely be that version?
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    @TwoSpikedHands, I'll preface this with the fact that I know nothing about the game, but, I think it depends on what your goals are. Are you trying to make a definitive version of the game? You may want to refocus your efforts on the EU version then. Or, are you trying to make a better US version? In which case, the only way to make a better US version is to keep on plugging away at that one ;)
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    I'm not familiar with the technicalities of the differences between the two versions, but I'm wondering if at least some of those differences are things that you could port over to the US version in your patch without having to include copyrighted assets from the EU version
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    @Sicklyboy I am wanting to fully change the game and bend it to my will lol. I would like to eventually have the ability to add more characters, enemies, even have a completely different story if i wanted. I already have the ability to change the tilemaps in the US version, so I can basically make my own map and warp to it in game - so I'm pretty far into it!
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    I am definitely considering porting over some of the EU features without using the actual ROM itself, tbh that would probably be the best way to go about it... but i'm sad that the voice acting is so.... not good on the US version. May not be a way around that though
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