This thread is both misleading, and wrong. He successfully decrypted the latest firmware and released the latest keys (not the new private key, private keys aren't stored on the system)... but he has no current interest in working on a custom firmware for a newer version.
QUOTE said:
KaKaRoToKS FYI: I am NOT working on 3.56.. maybe in the future, but for now, I concentrate on 3.55, you either choose PSN (3.56) or homebrew (3.55 MFW)
Taken directly from his twitter.
(edit) For those not in the know, there won't be another easy install custom firmware... If you updated to 3.56 you screwed yourself until either A: An exploit is found (the old method was NOT an exploit, it was Sony's private key) or B: a modchip comes out (which several companies are already working on it since all old consoles are now open to having their NANDs flashed via hardware)
Why is this? Because the private key team failoverflow released is now old news. Sony has made a new private key and now all future games will use this new private key. The new common key necessary to decrypt the firmwares and games are out... Pulled from firmware 3.56 with ease... So new PSN and PS3 games can still be decrypted and played on older and custom firmwares without issue. If you're wondering how old games that used the old key can still play on the PS3, well sony has this wonderful little whitelist that basically says "These are the only software that can run with the old key!". The games are listed with SHA hash to confirm they are indeed the real deal.
Sorry if any of this came out a bit rambly... It's almost 7am and I haven't had any sleep yet