422 iPhone_iPad_Mac_apple

My MacBook Pro got fail to verify firmware whil...

I have a MacBook Pro mid 2012 (13 inch). And I want to upgrade to MacOS High Sierra.

But while it's installing the installer had an error verifying firmware. How can I fix this.

Hi,

Update to the most recent firmware and SMC: https://support.apple.com/en-us/HT201518

最后更新：2017-09-26 23:43:19