help to mod my xbox

[kest]

i tried to mod my xbox but nothing to do.

first i can't flash the bios, i had to try 3 different pcs to finally did it.
and now that i've done it, i don't succeed to align the xbit because when i start my xbox, it steel start with the ms dashboard.

so, can someone help me to do the software modding or tell me where to find it?

in advance, thanks.