Acer M5 481PT - BIOS Password (Locked)

[tetraetila]

Hi,

I have a Laptop with the following features:

Laptop - Acer Aspire M5-481PT
BIOS Version/Date - Insyde Corp. V2.22, 4/15/2013
SMBIOS - Version 2.7
BIOS Mode - UEFI
Secure Boot State - On
System Type - x64-based PC


My son upgrade the BIOS and now I can't more access the setup to change the boot order. When F2 is pressed ask me for a password. I need a help to downgrade the BIOS to another version and have free access in setup. I really need this. I think this is a shame, I buy the machine and can't access the BIOS... Please help me!

Thank you and apologizes! I'm very furious with Acer

I need take off this Password and be free...