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
How to downgrade ps3 firmware and jailbreak the console
How to downgrade ps3 firmware and jailbreak the console
How To Downgrade Your CFW PS3 To A Lower Custom Firmware! [EASY WORKS WITH ANY KIND OF A CFW] - YouTube