PS3 update 4.82 out & should you update? NO! - Hackinformer
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 CFW on Latest OFW 4.82
PS3 Update to System Software 4.89: Here's a Full Guide for You
Sony PlayStation 3 Firmware 4.88 Download | TechSpot
PS3 System Software Ver. 4.82 | XTREME PS
PS3 Firmware 4.82 released, one year after last update & mere days after 4.81 exploit revealed - Wololo.net
PS3 How To Install multiMAN On 4.82 Custom Firmware! *Jailbreak Required* - YouTube