Download Downgrade PS3 Jailbreak 4.81 to 3.55 - Full Guide Free
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] Downgrade to 3.55 and install 4.78.1 Dex Rebug - YouTube