Hack the 360: The Tutorial
Backing Up, Modifying & Flashing the Samsung Drive
&
How to Create Game Backups
&
Bad Flash Recovery
For Toshiba-Samsung and Hitachi-LG
Tutorial by Geebee & contributors
Made into a nice post by SmokiestGrunl from iBotModz.net
I'll try and keep this post up to date with Geebee's updates.
This tutorial is very detailed and is too big for a forum post, so it has been put together in a word document. If you can't open word and need it to be in another format, request here.