Its bad. No Driver or BIOS download from Acer for this motherboard. http://support.acer.com/us/en/product/default.aspx?modelId=2219
This is the problem about OEM Builds. Your upgrade option is very uncertain & limited specially if the manufacturer do not have regular BIOS or Driver upgrade common to other motherboard manufacturers.
Without such upgrades, you are limited by the original BIOS & can only support whatever was already available during its time of release.
Anyway, this only confirmed what you already know that Acer "hide" all the details about your mobo to make a confident decision for upgrade. I say that upgrade can be done but with risk that BIOS will not recognize the new CPU & I do not know what effect it could have in performance if it boots at all. Sorry... I hope there are others out there who have crossed the bridge & can tell you how it is.