Acer S3 invalid firmware

[donkosta]

hello

I have acer s3 391,
need to update bios, currently its 2.09, newest is 2.17
but when it restarts for flashing, a blue window comes says that
InsydeH20 error
invalid firmware image
press key for reset.

I have tried 2.11 2.14, same
2.09 says version lover than actual.

How can I update bios or what can be the problem?

thanks