My brother-in-law asks me to update his iPhone 6s by using my MacBook Pro. And my MacBook Pro has Catalina OS. So there is no iTunes, I use Finder to connect iPhone to my laptop and then I saw below picture:
So I press
update and after some
continue, I saw below picture:
This is so weird because we don't see any progress bar, and we don't know when this update will end! - BIG ISSUE - so after one hour we decide to stop this damn update way and my MacBook Pro has 250GB hard disk. before download, I had 200 GB free and now I have 198.5GB free capacity.