How to root android Atrix 4G phone

http://forum.xda-developers.com/showthread.php?t=1016060


Since I was using firmware 1.5.7 instead of 1.2.6,
have to flash the SBF using RSDlite(huge img to download).

After that you can use GladRoot to install SuperUser.
(might need to do it twice on WinXp to suceed).
And then you can upgrade the system to 1.5.2 via
Setting ->About Phone -> Upgrade phone.

Motorola seems to has strict rules to not allow rooting
of the devices.(Nexus S is quite easy to do it).