Acer is your primary info source, thus visit the support website. Once there, review the specs as they related to model#. They should provide a cpu listing of supported cpus. Now, if you need a bios update because you need to expand upon the current support listing, *hopefully* the bios update should explain this. Acer support if lacking in such details, you basically have no recourse. The new cpu may drop-in, etc. but since a bios update is required to acknowledge its full benefits could a dead horse. Thus, the cpu listing should point to the cpus allowed. As Robert offered you need to know the revision or besides the model#, what truly is present, the bios ID string when 1st boot-up is displayed and you see what bios level you're at.
While you know the mtrbd.. info and maker, you use that only as a last resort and even more important if you go that route, that you "SPECIFICALLY" know what is required or needed to proceed so you don't create a doorstop. There are no guarantees on this but you have to be sure all info applies to your system as you know it, period. If you do a bios update be sure to be ready and *save* the old bios data in case you need to return to it if things don't work well provided you can. Have all the data and pgms. that maybe required and print out the procedure. FYI, I have done this on various systems not just Acer but I triple checked beforehand. Let's be clear, you proceed at your own risk.
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