UPDATE: its now safe to update to 4.91. PS3HEN (& HFW), CFW & PS3 Toolset have been updated to support 4.91.
. PS3 Firmware 4.91 is now Live The expected once a year firmware update has been executed by Sony, PS3 4.91 Firmware is now Live. While an expected update, could this bring other changes to the firmware? Likely not but its still early to conclude as this update is fresh as of writing . Do not update, various exploits / tools / essential homebrew will need to be updated to support the latest firmware update of 4.91. See below for a short FAQ on 4.91, as there is always some confusions around the update process. .