PS3 firmware v2.53 redux: it's coming for real this time [update] – Destructoid
Playstation 3 Minimum Firmware Version Check Guide
Sony polishing v2.4 PS3 firmware for June 18? | TechRadar
PS3 firmware 2.36 now live | Engadget
PlayStation 3 updated to official firmware version 4.87 | GBAtemp.net - The Independent Video Game Community
Surprise! There's a new PS3 firmware update - here's what patch 4.88 does | TheSixthAxis
PS3 News: Firmware 4.85 released and HFW 4.85.1 already released by Joonie allowing for unsigned code execution - Joonie recommends not to install FW 4.85 until all tools are updated! - Wololo.net
Playstation 3 Minimum Firmware Version Check Guide