Do you tried to flash the aflash3's bios backup (non modified)? AFLASH3.exe /DUMP:BIOSBACK.ROM - for backup then AFLASH3.exe /AUTO:BIOSBACK.ROM
Yes, it was the first thing I did when I saw your post containing the application, and it flashes the BIOS correctly, that's the reason I think I'm doing something wrong while modding the BIOS. The AFLASH3 utility works fine with this laptop. What I can't get to work is the modded BIOS.
OK. Open BIOSBACK.ROM with Hex editor (e.g.Winhex), search string RSA1 and replace GARBA PEGATRON pubkey and marker with (e.g.) Acer 2.1 pubkey and marker (use Ctrl+C to copy and Ctrl+B to paste the block). Save, then try to flash :