MemeKaku released for older PSVita firmwares – Now, you can hack your FW 3.55/7 PSVita and PSTV because CelesteBlue felt like it!
When HENkaku was released, everybody was told to update to FW 3.60 and older firmwares faded away into irrelevancy especially after Adrenaline was released. While FW 3.5x was happy in its grave, CelesteBlue thought otherwise and brought it back up from the grave with MemeKaku!
What is MemeKaku? What’s the current state of HENkaku on FW 3.55/7?
MemeKaku, by CelesteBlue, is a backport of HENkaku to older PSVita firmwares namely FW 3.55 and 3.57. HENkaku, by Team Molecule, is a native hack for the PSVita which allows you to run homebrew, use plugins, install custom themes and much much more.

With the release of HENkaku and later on Adrenaline, older firmwares were thought to be dead forever but that has changed!
HENkaku was initially only available for FW 3.60 but it later got support for FW 3.65/7/8 via H-encore and obviously, older firmwares were left behind because they didn’t offer much over newer ones.
As of right now, MemeKaku is at the following state:
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You can run homebrew and plugins with it
- Some homebrew/plugins may refuse to work properly as they may use offsets specific to certain firmware versions
- Loading decrypted content from ux0:/patch is possible
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Enso is currently not supported but CelesteBlue said it could be ported to all FWs lower than 3.65
- Enso is a hack that lets you run unsigned code at boot without any user interaction. It functions like a full untether in iOS jailbreaking terms
- Some plugins like Custom Warning and Custom Boot Splash don’t work
- Many other things may not work or require slight adjustments to work with firmwares 3.55/3.57
- Information about the state of MemeKaku came from this page which is maintained by TheRadziu
Is there anything else planned?

Support for older firmware versions is coming soon so don’t go update your PSVita running an older firmware just yet!
Obviously, CelesteBlue’s tinkering with his newly acquired dev kit doesn’t stop here and he’s plans to support more firmware versions in the future. Most notably, he said that FW 3.51 support is the next thing in mind for MemeKaku and that FW 3.18 support will also be coming soon.
Other than HENkaku on lower firmwares, CelesteBlue’s dev kit may also bring about other noteworthy stuff on the PSVita so make sure you stay tuned for any updates through his Twitter account found here. If you don’t know who he is, CelesteBlue is a veteran PSVita developer who worked on getting FW 3.67+ games to work on FW 3.60/5, contributed to LOLIcon (a plugin that lets you overclock your Vita to 494MHz) and much more. He’s also given some contributions to the PS4 hacking scene.
Conclusion
If you have a second Vita/PSTV lying around running an older firmware, you can muck about with MemeKaku by following the link below to activate it. As for what might come out of this, it’s still hard to tell but some Unity-related things need FW 3.5x to work so perhaps some interesting developments may come out of this!
MemeKaku link: http://nopaystation.com/memekaku/



1st
Whats the point of that ?
This is useless (for now) but cool for even just the fact that if for some reason people don’t have access to 3.60 or 3.65 FW files.
It’s name choice described it well.
useless like the zett
Useless as heck… since one of this fw has know battery drain bug -> 3.57
Lol I for one can’t wait for 3.51 for the simple reason that I’ll be able to use the psm developer apps (and probably decrypt them for use on 3.60) :3
I mean with 3.55 I guess you could make a copy of the 3.55 email app and have FAILMAIL on 3.57-68
AMAZING… CANT WAIT TILL 3.4X AND 2.9X AND 1.0X WILL BE HACKED
Maybe hacking lower firmwares may allow hackers to know more about some protection features that we can’t really observe on higher firmwares. Or maybe it will be easier to find other vulnerabilities on firmware that were more vulnerable in the first place.
This is just a thought, I don’t have any evidence or anything. But the more hacked the merrier!
3.18? This is simply beatiful. I have one Vita and one IDU, both running 3.18, this will breathe some life into them. Hopefully there will be a way to turn IDU mode on/off on 3.18 permanently without upgrading to 3.6x.