Jailbreak ANY firmware revision (3.15, 3.40, 3.41, 3.42, 3.50 & 3.55) with this apparently released by PSJailbreak. quote from their blog Well here it is. This is custom firmware for the PS3 based on the Official 3.50 Update. (Now updated to reflect latest 3.55 ps3 firmware update) You will need to download the RAR file and extract the contents to the same folder. Download the files HERE The PSUPDAT.DAT file is ready patched to re enable the bug exploited by all versions of the USB Jailbreak but you will obviously have to country patch it and secure key sign in using the included PUPSigner.exe Once that has finished transfer the PSUPDAT.DAT file to a USB stick and update the PS3 from there It will find and ask to install firmware update 3.51 this will allow people to patch a 3.50 system. However once reset it will revert to showing 3.50. You may now jailbreak your PS3 using the PSJailbreak dongle or similar. Main features of custom firmware: USB Exploit reinstated, MAC code randomisation, All automatic updates are now BLOCKED disk or online. Working online and on PSN Store. You will need to acquire the backup manager separately - google is your friend. Download the files HERE