If you have the Atrix 1 read carefully through the instruction bellow...
http://www.atrixforums.com/forum/motorola-atrix-hacks/4414-how-root-motorola-atrix-1-all-versions-including-stock-locked-2-3-4-2-3-6-a.html#post47155
Sent From Rob's RP-Hybrid Atrix.