yes you can you need to for it to work
No games will update your Xbox 360. When you insert a game and it asks you to update, this is a game update.
Microsoft maintains a list of titles that are forward compatible with the Xbox 360. If the title you are trying to play does need an update to play that update will be applied when you first launch the game assuming that your Xbox 360 is connected to the internet.
if it is a Normal Xbox game and you want to play it on the xbox you may need to manually update your xbox
no it stays on your hard drive
All the xbox back catalogue should play on the 360, however you may need an update over xbox live to get some to work.
you just select yes but if your xbox original game has not been "selected" for the "list" of 1,000 of games that have been updated for the xbox 360 format
Buy a new Xbox and keep it away from the internet. There is no way to reverse a system update, only game updates.
You have to first update the game over xbox live
specify
yes
Currently, the Xbox 360 version of Minecraft is running 1.6.6 beta. This update came out before the adventure update of 1.8. It will take a while for the Xbox 360 version of Minecraft to catch up to the PC version of the game.
It should, although you will probably have to download and update for the game off of Xbox Live.