Sorry if this has been covered, I stf but could only find that downgrading from a higher to a lower iOS doesn't work. Does upgrading to an interim iOS work, even when the iOS is "discontinued" as with iOS 13?
iPhone 7 on iOS 12.4, Tmobile. Want to avoid 14 'til they get the bugs worked out. (Latest seems to be Find My iPhone sucking battery. Nice job, Apple!) Possible to take it from 12.4 only to 13.6? I see that I can dl 13.6 here (is this site considered reliable, if not what is?), am I correct in getting the GSM version since my carrier TMo is GSM? Will iTunes let me upgrade via this path? If not, is there some other way besides jailbreak? Not going to jailbreak. Thanks.
iPhone 7 on iOS 12.4, Tmobile. Want to avoid 14 'til they get the bugs worked out. (Latest seems to be Find My iPhone sucking battery. Nice job, Apple!) Possible to take it from 12.4 only to 13.6? I see that I can dl 13.6 here (is this site considered reliable, if not what is?), am I correct in getting the GSM version since my carrier TMo is GSM? Will iTunes let me upgrade via this path? If not, is there some other way besides jailbreak? Not going to jailbreak. Thanks.
