PS3 System Software 4.89 Update Live, Don't Update Your Firmware! | PSXHAX - PSXHACKS
PlayStation 3: Sony releases Firmware 4.86 for their 13 year old console - HFW 4.86 released, SEN Enabler updated & PS3HEN to be updated soon due to no kernel changes! - Wololo.net
PS3: Homebrew ENabler 3.0.3_4.88 released for Firmware 4.88 - Wololo.net
PS3 Update 4.90 Released This Feb. 28 and Brings More of What Players Expect - MP1st