Transfer Updates

If you get a new system than you can use a transfer cable to transfer all the content on the hdd to the new one. If it is the system update that caused it than I dont know if a transfer cable would work. It might transfer the incomplete update too. You could
probably update the new system and then transfer the data from the old one. It shouldn't overwright it. Also could just license transfer and redownload everything again.

Have lost loads of coin's on a lot of player cards

Are you doing a network transfer? If so both console will have to be on while the transfer goes through. Also something that happens is the games will try to update before the transfer takes place and that will stop your install. I ended up just re downloading
most everything when I switched mine. Just made it easier. Lots of people have had this issue when doing transfers. My internet was fast enough that it wasnt any faster to do a network transfer. Plus it only transfers the core of the game and will still have
to download the updates. Hence where the issue of it trying to download updates before the game is installed.

I was in the middle of transferring licenses from 1 xbox360 to another and a system update was applied automatically to the xbox and it rebooted. When trying to resume the license transfer I now receive an error message that I cannot you already transferred
your linces on 11/14/20215 you cannot transfer them again until 3/14/2016. I never finished transferring the licenses before the xbox rebooted due to the system update.

Most content items transfer over during the update, yet there are some that don't. Visit
minecraft.net/article/better-together-update-here for more info on which items will and will not transfer over.