Here is my 2 cents, from a nOObs perspective. I would reccomend just using Slayers EVox 2.6 to install your dash. This is a one shot deal, just make the Slayers disk, place it on your DVD drive, power the unit back on and voila in minutes you will have EVOX, XBMP, XBMC, and all of your other handy apps insalled in one step. You can also boot to Avaluanch from Evox. I would say use this method until you become more familiar with everything. I just modded my second XBOX using this method and it was flawless.