I have bought a used mid-2011 Mac Mini. How can I prove that the EFI isn't manipulated? I would like to use the Mini for online banking and other secure work like that.
I've made a internet recovery (I think its safe because the files are coming from the clean image) but is there a way to check if the EFI I'm using (also for the clean installation) is original? (its MM51.0077.B10 EFI 1.6).
I would feel better with checksum or a size value I can check.
Can anybody help?