Update: PRXdecrypter 2.3:

• “Analyze files” option added to menu – displays info about the files without changing them
• User module keys up to 6.00, not sure if they’re the ones used in the firmware though!
• Fixed decryption issue – extra data added to decrypted files
• Rewritten kernel modules for 2.XX+ allowing fewer external files and cleaner code
• Rewritten handling of compressions – 1.50 has RLZ with the correct file, 2.71 to 3.80 have RLZ, 3.80+ has KL3E, KL4E and may have RLZ depending on the exact firmware version

Only for the hardcores, the real hackers, or for those who have the hunger to broaden their horizons… Get in deep with jas0nuk’s PRXdecrypter. It can decrypt / decompress / extract all this:

• firmware modules from official firmwares (1.00-5.00+)
• updater modules from official updaters (1.00-5.00+), including obfuscated ones
• official updater DATA.PSP
• reboot.bin and reboot_02g.bin from all retail firmwares
• EBOOT.BIN and modules from all retail games (up to 6.00), and non-retail/testing EBOOT.BIN files
• M33 custom firmware modules
• RLZ files
• KL4E files
• meimg.img and me_sdimg.img
• demos and game sharing DATA.PSP files
• index.dat
• 1SEG.PBP

Download: PRXdecrypter 2.3

- source: maxconsole