Joined: 13-July 02
Member No.: 1490
Xbox Version: unk
360 version: unknown
You could have asked all your questions in one thread.
1. Yes you could get banned if you mod your xbox. Nothing is 100% safe. Risk currently is minimal, but that can change overnight and without warning.
2. Originals and backups that you create yourself using the proper tools will work. You must use a Xbox 360 drive in your PC or get a Samsung Sh162 and put the Kreon firmware on it to make backups.
3. You must use DVD+R DL.
4. It is possible to brick your console but not likely if you learn what you are doing well. Opening your console voids the warranty. If your box breaks down the road you can not even pay MS to fix it. Currently there is a 3 yr extended warranty from MS.