How To] Downgrade Fat PS3 From 4.66 to 3.55 Firmware Using E3 Flasher Tutorial (Part 3 of 3) - YouTube
PS3 Fat 2006 vs PS3 Slim (Firmware 3.00 Higher) 2009 Startup Comparison Side by Side HD - YouTube
PlayStation 3 (PS3) Fat 80GB Backwards Compatible & Old Firmware Jailbreak LIKE NEW, SEE PICTURES for Sale in Medley, FL - OfferUp
PS3 custom firmware installation (fat CECHA01, and slim CECH-2101A) - William Quade
Hackable PS3 models and information | GBAtemp.net - The Independent Video Game Community
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
Downgradable PS3 Models & Base Firmware with MinVerChk | PSXHAX - PSXHACKS
HOW TO FIX PS3 - NEW HARD DRIVE & UPDATE INSTALL - YouTube
Nuevo firmware de PS3 produce problemas de arranque
How to install Custom Firmware on the PS3 with FW 4.82 - Hackinformer