

The protocol is very flexible if both parties agree to it. Someone once sent me mexican dollars or some shit but I could convert them pretty cheaply within the fiat institution so i just asked them to send $5 extra to cover that for me and completed the trade. Especially when you think it’s not malice but a mistake, then I’d just point out the mistake and tell them to stick to the offer next time.
You just have to run the newest installer again to update, unless you are on tails, in that case you need to do it via the tails install script.