Sony PlayStation 3 PS3 Slim 160GB Console (CECH-2503A) Firmware 3.55 160GB PS3 711719177364 | eBay
Guide: How to install PlayStation 3 custom firmware, run homebrew - AfterDawn
How To - Downgrade The PS3 CFW From 4.82 To 3.55 OFW Step By Step - YouTube
SANY ilaya - UPDATE!!! PS3 4.50 OFW DOWNGRADE (hardware flasher method)/UNBRICK SERVICE for BRICKED PS3 due to FAILED firmware updates (see guide below) JAILBREAK: -Software: for firmwares 3.55 below (slim and phat) -
How to install PlayStation 3 custom firmware, run homebrew - AfterDawn