I'd have to check em, it was just a guess, but I have two airs from the last decade (2009 and 2015 I think) with their original operating systems and I think one is around 10.4 and the other 10.10ish.
Maybe I misunderstood your question... I never updated the OS on either of them. Or on any Mac I've owned since the mid 90s.
Maybe I misunderstood your question... I never updated the OS on either of them. Or on any Mac I've owned since the mid 90s.