Sony PlayStation 3 60 GB Black Console CECHC03 Firmware 3.55 (FW 3.55) PS3 SACD | eBay
UPDATE: v2 released] PS3 HEN (Homebrew Enabler) now available for all console revisions | Page 3 | GBAtemp.net - The Independent Video Game Community
How to Go Back to OFW 3.55 in the PS3 Recovery Mode - Our Pastimes
PS3: CFW Evilnat 4.89.3 released - Wololo.net
PS3 firmware update 3.55 released, does nothing for you – Destructoid
PlayStation 3 Model Guide - SHOP01MEDIA - console accessories and mods, retro, shop - One Stop Shop!
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 install PlayStation 3 custom firmware, run homebrew - AfterDawn