Didn't realise this process was going to take all day … I suppose 3 out of 4 updates isn't that bad. I've updated my watch, iPhone and iPad1. Now I just have my MacBook left but I think it's going to be more of a tedious process than first thought. I've downloaded Mojave but now I need the installer for High Sierra too in case it all hits the fan.
while also figuring out why it had 30GB of "other" data that I didn't need