Thanks for your prompt! Although before flashing I'd better wait for Busykid508-sensei confirmation regarding white list & logo in his mod. The original discussion of the both two items was on Page 957 here.
Have you tried activating it with Acer certificate with original bios? SLIC 2.1 marker and key exists.
The ACPI05 is split into 2.0 SLIC and 2.1 SLIC. 2.0 is complete, 2.1 is only missing the oem table id which is the same as 2.0... If it's needed to make 2.1 visible, swap locations of public key and markers of 2.0/2.1, or just replace 2.0 pubkey and marker with the pubkey and marker of existing 2.1, dynamic mod - no inserting new ACPI or strings.
JFYI ACER uses the same bios rom on several of its machines, it's pretty common with ACER. Have doubts, verify the md5 sum. I think they are programming shipping configurations which is not overwritten by the bios flash. hole rom locations.