If you have the latest drive firmware and a new stealth patched game (eg reach ect). What are the chances of getting banned for playing online?

Can you flash an xbox without a desktop with a sata port. Like can you do it using a usb to sata?

I'm not 100% sure but i doubt that it can be done with one, if you don't have a SATA port but have ...

I have three main questions..
1) How much does it all cost in the end W/ parts
2) How risky is it? Can you get banned for it?
3) Can any xbox 360 be flashed?

1) If you have a spare SATA cable an ...