Quote (Some1):
And the game of cat-and-mouse goes on. After a quite long break, Sony decided to fix the latest kernelexploit in 6.39
This is the proof of concept for another kernelexploit found and developed by someone for the latest firmware 6.60 running on all psp models. This video shows the exploit loading on the PSP Go!
He is currently working on the downgrader so stay tuned.But until it is out I recommend you to keep away from the update since it has no features unless disabling your HENs ;-)
Sorry for the poor quality but the PSP cam isn't the best.
I will not share any data.
Thanks to someone for letting me test his amazing peace of code and all the people on #hellcat