Modifying Wyse client phoenix BIOS

[imradlol]

I have a wyse z90d7, and i've been trying to overclock the cpu to no avail. My last shot is to try and mod the bios to unlock these options in the bios. cpu-z tells me it's a phoenix bios version 2.0c, and i was able to successfully dump it which gave me a 2mb rom file. Before i waste any more time on this, is it even possible to unlock the cpu voltage and or/ frequency settings on this? I can't find a whole lot of info online and i cannot find much info on modding these little computers.  I'm not too familiar with BIOS modding, and i cannot find an already modified bios and i'm quite sure i cannot jsut stick any phoenix bios on this thing right?

I could really use some guidance on this

I've attached the bios file if anyone can help me out.