Surprise! There's a new PS3 firmware update - here's what patch 4.88 does | TheSixthAxis
PS3: Official Rebug 4.81-REX/D-REX with COBRA 7.31 released - Hackinformer
Jailbreak PS3 3.60 Firmware Demoed On Video | Redmond Pie
PS3™ | System Update
PS3 Firmware 4.30 Brings Vita Trophies To PS3, Removes Folding | TheSixthAxis
What Year Is It? There's a New PS3 Firmware Update Out Now | Push Square
PS3 firmware 3.21 locking out more than just other operating systems? | Engadget
I purchased a PS3 backward compatible from ebay for a good price and I'm impressed how clean it is. However... It's still on firmware 2.50. Should I update the firmware? : r/PS3
PS3 Firmware Update 4.90 Released, Here's What It Does
PS3 Firmware Update 4.85 Quietly Released By Sony
PS3 Update 4.84 released, does not patch StoreHaxx - Wololo.net
PS3 Firmware Update 4.90 Released, Here's What It Does