PS3 UPDATE INSTALL USB FLASH DRIVE PLUG IN LATEST OFFICIAL SONY FIRMWARE FW OFW | eBay
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 OFW 4.81 / 4.82: How to install Full Games #2 - YouTube
May's firmware updates made PS3, Vita, and PSP games harder to get (and some inaccessible) : r/Games