PlayStation 3 firmware updated to version 4.88 | GBAtemp.net - The Independent Video Game Community
PlayStation 3 System Software Update 3.72 Now Live (updated) | by Sohrab Osati | Sony Reconsidered
PS3 System Software 4.89 Update Live, Don't Update Your Firmware! | PSXHAX - PSXHACKS
PlayStation 3: Sony releases Firmware 4.87 for their 14 year old console - HFW 4.87.1 is already out with SEN Enabler already being updated to spoof FW 4.87 - Wololo.net