For Asrock's MoBo ? add. 3 SLP modules already are in original bios, so, we just replaced empty pubkey&marker with a Acer's Slic 2.1 content (phoenixtool and mmtool were used)
I've sent a message to Asrock's technical support site and they have said that they will look into it. Fingers crossed. I hope this won't beat you - I'm sure it won't really! Thanks again.