Christmas in November" release: PS3 Custom Firmware installer for Firmware 4.82 - Wololo.net
PS3 - PS3 CECH-2504B Flashing 4.82 to 3.55 | PSX-Place
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