When I open setup,it shows: http://imgur.com/a/tR8bR
I have acer aspire v3-571G Windows 8.1 Pro
You cannot flash the 2.xx BIOS on the 1.xx BIOS on that notebook. Since you have 1.xx BIOS that means that your notebook came with windows 7.
It looks like you're new here. If you want to get involved, click one of these buttons!
to get all the benefits
of being a member!
Get social and introduce yourself in our
or learn about our ACE Program
and What's Happening
Acer Community User Agreement.