Can't you just save it on your file share go to bnet open in full screen or sumpthing den copy and paste in paint save a a .jpeg alot easer don't you think
Omg never towel it and it will break again what you need is a reflow as your gpu has colder solder points if you take it to a laptop reaper shop they will be able to reflow it or towel trick it and trade in in add some cash and buy a new xbox.