PS3 - PS3 CECH-2504B Flashing 4.82 to 3.55 | PSX-Place
PS3 Tutorial (2021) - Downgrade from ANY cfw to ANY lower cfw EASY! 2 methods.. with details & tips - YouTube
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 gameing - Video Game Store
PS3 update 4.82 out & should you update? NO! - Hackinformer
PS3Xploit: 4.82 OFW to CFW Hack Released | GBAtemp.net - The Independent Video Game Community