PS5 Exploit Guide

lufeig · Jun 4, 2026

FateNightroad said:
From the to base game to uncompressed: (22/42) * 100 = 52%. So, I already know I'm saving more than half of space after conversion, so why do I need to know the Gain to total ratio for?

you're not saving more than half.

initial: 42
final: 22
savings: 20

you're saving 20.

21 is 50% of 42.
20 is 47%

the logic is the opposite of what you said.

we already know it was 42gb, we already know it is 22gb now. but how much space i'm saving? 47%

TheStonedModder · Jun 4, 2026

Even a 3ds can be a duelsense

Inaki · Jun 4, 2026

FateNightroad said:
From the to base game to uncompressed: (22/42) * 100 = 52%. So, I already know I'm saving more than half of space after conversion, so why do I need to know the Gain to total ratio for?

This is either a language issue or a semantics issue or both. You are gaining a 47% of space ( 47% of the total size you began with has been "given back" to you, "you saved a 47% of the size" ). You may think the concept is misleading or useless, you may think the language used is unclear, you may think you don't need to know that... but it is nothing wrong, it's just a way of giving you info on "what you saved".

littlemisskittn · Jun 4, 2026

madbrainx said:
I’ll probably wait a few weeks before I start compressing my backups, just to give MkPFS a bit more time to mature. Hopefully they can push read speeds past 250 MB/s by then.

Should you start on them now so this way once they push it past 250mbps, then you'll have the images ready to go?

madbrainx · Jun 4, 2026

Current consensus is that an uncompressed .dat PFS should be created first and then wrapped in a compressed container. That could change if a better approach comes along, and I'd rather avoid having to redo a bunch of work later.

lufeig · Jun 4, 2026

never mind.

FateNightroad · Jun 4, 2026

Inaki said:
This is either a language issue or a semantics issue or both.

I can see why you would think that since my original post sounded like I didn't know what the, Gain to total ratio was or how it was calculated. I did. I just didn't want to come off as sounding rude and just plainly say, "why the hell do we even need this info for?".
Anyways, do you personally find that info(Gain to total ratio) useful yourself?

iguanoPT · Jun 4, 2026

FateNightroad said:
I can see what you would think that since my original post sounded like I didn't know what the, Gain to total ratio was or how it was calculated. I did. I just didn't want to come off as sounding rude and just plainly say, "why the hell do we even need this info for?".
Anyways, do you personally find that info(Gain to total ratio) useful yourself?

Post automatically merged: Jun 4, 2026

TheStonedModder said:
Even a 3ds can be a duelsense

View attachment 576394

Now you're playing with POWER

kozure · Jun 4, 2026

sorry was wrong theard

littlemisskittn · Jun 4, 2026

iguanoPT said:
Now you're playing with POWER

PORTABLE POWER!

ThePSGuy · Jun 4, 2026

littlemisskittn said:
Wonder if that’s the issue with my 12.40? My profile I use on there is legit whereas the 11.60 one isn’t.

Post automatically merged: May 29, 2026

So, @HS2005 was right. I used the EXFAT version on my external SSD, vibration works fine.

So there’s got to be an issue with running this game on internal since I tried both FFPKG and the actual game folder itself and had no vibration both times.

So chalk Metal Gear Delta up as one that’s external only.

I just encountered this exact same issue with Mafia The Old Country: game was working *fine* (didn’t even have audio issues like reported by many people) but the vibration was just missing.

I’m glad I saw your post a few days ago when you initially posted it because I remembered it and that made me avoid all the troubleshooting hassle.

I can confirm going from .ffpkg to .exfat fixed the vibration although I feel like the game have more frame time spikes than before, even though it was already stuttering before but less frequently (might be placebo, I need to do more thorough testing).

Did you notice a performance hit on Metal Gear Solid going to .exfat?

BobaFett_UK · Jun 4, 2026

TheStonedModder said:
Even a 3ds can be a duelsense

View attachment 576394

Goodness, does this mean i can use my PS4 scuff controller with my ps5?
Here's a thought, what about a Joystick like a logitech X56?

xalfie · Jun 4, 2026

Anybody else did notice on current y2jb that stay working when loading it a second time, instead to finish with the classic 'already jailbroken' ?

littlemisskittn · Jun 4, 2026

ThePSGuy said:
I just encountered this exact same issue with Mafia The Old Country: game was working *fine* (didn’t even have audio issues like reported by many people) but the vibration was just missing.

I’m glad I saw your post a few days ago when you initially posted it because I remembered it and that made me avoid all the troubleshooting hassle.

I can confirm going from .ffpkg to .exfat fixed the vibration although I feel like the game have more frame time spikes than before, even though it was already stuttering before but less frequently (might be placebo, I need to do more thorough testing).

Did you notice a performance hit on Metal Gear Solid going to .exfat?

Only when using an extension cable instead of direct to the drive

Arakon · Jun 4, 2026

Tried to use ShadowMountPlus 1.6test15-fix2 and exFAT Image Builder to directly convert dump folder to compressed .ffpfsc (named PPSAxxxxx.ffpfsc in the same folder as the previous dumps were). Shadowmount starts, does not show the images as detected (only 2 that are still in dump folders), then 20-60 seconds after, the console crashes and shuts down.
Any ideas what may be wrong here?

Edit: Renamed them to .ffpfs. One image doesn't even mount (error about a json file), the other starts, then instantly crashes and complains about a missing file.

I think I'll just sit this out for a while longer till it's more established.

Inaki · Jun 4, 2026

FateNightroad said:
I can see why you would think that since my original post sounded like I didn't know what the, Gain to total ratio was or how it was calculated. I did. I just didn't want to come off as sounding rude and just plainly say, "why the hell do we even need this info for?".
Anyways, do you personally find that info(Gain to total ratio) useful yourself?

Well, I don't know, we compressed it to its 52% or we saved the 47%, I don't mind, not an important thing, I think.

xalfie · Jun 4, 2026

finally compressed images?
if fpkg is around, it's late even for that.

Blythe93 · Jun 4, 2026

xalfie said:
finally compressed images?
if fpkg is around, it's late even for that.

They said it's coming soon, but maybe it's Coming Soon™?

It's great to have any kind of development, really, even if it comes a bit late in the game.

xalfie · Jun 4, 2026

ps5-kexp updated to version v0.6-c3d0fd9
For sure some kind of post-stability for recent y2jb... Time to update it for testing.

https://github.com/itsPLK/ps5-kexp

HS2005 · Jun 4, 2026

Summarization:

Proof of concept: Kraken/oodle compression and decompression via the A53 coprocessor. He is now at level 6. Kraken compressions goes up to level 12.
Game file sizes reduced by up to a third, with the console's original read speed. So no negative loading times.
It's hardware decompression with a53 like real fpkg.
Once this is done, I'll move on to the FPKGs.

Post automatically merged: Jun 4, 2026

Some findings in regardings to the new compression (Not mine):

Code:

Experience with ffPFS-

Config-
FW 9.00 + Y2JB + SM+ 1.15Fix2 + K-stuff 1.07 + external Drive

Processing time-
With 10 cores the compression time was around -26 mins
Once the compression is done it writes to the image to your drive- 10 mins
Total time around 36 mins with avg speed throughput- 81 Mbps

Size Comparison
Before - 170GB
After - 108GB

Some initial impression (Black Myth)
Loading time
exFAT - 1 min 47 secs
Ffpfs - 1 min 48 secs
Texture- Looked closely but couldn’t find any difference in texture loading (at least to  my eyes).
10 mins of Gameplay experience is similar to exFAT

My config is: FW 12.00 + SM+ 1.15Fix2 + K-stuff 1.06 + external Drive (M2 Gen5 Samsung 9100 Pro).
But as I have said, I have the same experience on multiple games.

PS5 Hack Status:

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Additional Information:

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