Discovered one thing in "ps1emu".
I have discovered, that the file ps1_rom.bin in the "ps1emu" directory on dev_flash of ps3 is for truth PS2 Bios File!
Evidence: file ps1_rom.bin, renamed from ps1_rom.bin to SCPH-70004_BIOS_V12_PAL_200.BIN works normally like PS2 Bios File on PS2 emulator "PCSX2".
I am writing about It, because I think, that It can help for turning on backward compatible on the consoles without PS2 emulation.
if we chage the bios from pal to jap or usa
On a 60gb ps2 compatable ps3 will it execute another type of or region of ps2 games ¿? I do not have another region that are not pal games.