Rooted Motorola Atrix 4G after updating to build 4.5.141

After updating your Motorola Atrix 4G to software version 4.5.141 you will lose root access. For those of you want to root your Motorola Atrix 4G after updating to build 4.5.141 this is how you do it.

Keep in mind that when typing in the commands during the rooting process you will leave out the quotes.
Instructions to root Atrix 4G running Gingerbread on 4.5.141:

• Download and Extract Fastboot Files (I was unable to post the Link, but you can go to "android-advice" website to find it)
• Connect your phone to the computer via USB
• Put your phone in fastboot mode (restart phone holding volume down button)
• Open a command prompt and navigate to C:/moto-fastboot-win32 type “moto-fastboot.exe flash preinstall preinstall.img” press enter
• Press “Vol Up” to initiate fastboot protocol type “moto-fastboot.exe reboot” press enter
• Your phone should reboot, wait for it to come back up
• type “adb shell” press enter (to restart the shell)
• type “/preinstall/dosu” press enter
• If step 10 fails type “/preinstall/su” instead and hit enter
• type “/bin/mount -o remount,rw /system” press enter
• type “cp /preinstall/su /system/bin/” press enter
• type “chmod 6755 /system/bin/su” press enter
• type “PATH=/system/bin:$PATH pm install /preinstall/Superuser.apk” press enter
• Reboot your phone