The 70012 (and later v2.00+ versions) is generally preferred over very early versions like the SCPH-10000. Older BIOS versions can sometimes cause bugs in memory card emulation or general system stability .
A corrupted dump will cause "Black Screen" errors. scph70012biosv12usa200bin work
The v12 BIOS was the first to officially block the "FMCB" exploit in hardware. Sony patched the OSDSYS (OSDSYS = OSDSYS Menu) vulnerability that allowed uncopyrighted executables to run from a memory card. While a software workaround exists (using a "Noobie Package"), a raw, unmodified v12 BIOS will refuse to boot FMCB. Therefore, when users say "v12 USA 200 bin work," they often mean "works with FMCB via a secondary exploit." The 70012 (and later v2