How to remove xbox live (ms dashboard=error 21)

(1) Accidently installed xbox live from Halo 2 disk.
Now I get error 21 when selecting "MS Dashboard" menu under Evolution.
(2) How do I (a) remove xbox live or (b) fix this error by some other means.
END.

 

I'm pretty sure you can't but here is a link i didn't really read it to close.

http://forums.xbox-scene.com/lofiversion/index.php/t8773.html

 

u can u need to download slayers and u select restore m$ dash then install/upgrade evox apps xbmc
if u need to no where to get it from pm me

 

by the way u dont lose any of your game saves
eg: if u r up to stage 2 in a game u will still be up to there

but i thing everything u had in pxhdd is gone