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
How to update PS3: with USB, in safe mode
PS3 Gets A New Firmware Update - GameSpot
So there's a new update guys... wonder what's different : r/PS3
How to get PS3 Firmware update 4.90 for installing, Google and Edge covered in the video - YouTube
PS3 Update to System Software 4.89: Here's a Full Guide for You
PS3 Firmware 4.90 is out! (and you really don't want to update) - Wololo.net