: Consoles with BIOS v18 (typically manufactured after Q3 2008) cannot run standard Free McBoot from a memory card. The "8C" Threshold
: Consoles with BIOS v2.30 and a "Date Code" of 8C (third quarter of 2008) or later typically cannot run standard Free McBoot. Sony patched the "DVD Player Update" vulnerability that FMCB relied on starting with this BIOS version. Workarounds : scph-90001 bios v18 usa 230
In previous PlayStation models, the BIOS checked the "wobble" (Sony’s physical copy protection on the disc’s inner ring) and the region code. Modchips worked by intercepting the "OK" signal. : Consoles with BIOS v18 (typically manufactured after