How downgrade bios on acer S7 391? V2.15 = lot of noise

mood8moody
mood8moody Member Posts: 5 New User

Hello, I installed the latest bios on my s7 : version 2.15, i upload to the Acer site, I feel that my laptop was less fan noise with 2.14.
 
Can you explain me, how to downgrade a bios on the pc,?I have version 2.14 on my desktop but when I run the executable"STOM214.EXE" it verifies if a version more recent and present, as is the case here, it throws me.
 

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