PS3 System Software Update 4.90: What's New and How to Update | TheBadGamer
PS3 4.46 Firmware Live: Fix for Bricked Console
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