Bios Lock String Error .......

[KhunThai]

Using EPox 8K7A MOBO: Tried upgrading my bios to 8k7a1606 and when I rebooted I get check sum errors. I am forced immediately to re-flash my bios, however when I try to flash bios with all versions i get "Bios-Lock String does not math your system"

Please help...

Thanks