[Q] Need help to re-root atrix 2

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http://forum.xda-developers.com – I get a message in the cmd prompt when trying to root my Atrix 2 after update, "adb is not recognized as an internal or external command, operable program or batch file" . I was rooted before update with OTA VooDoo Rootkeeper but when I hit Restore Root it tries but is unable. The only unchecked boxes are Device rooted and Root permission granted. It says I have a protected su copy available but apparently it cannot retrieve it so I am stuck. Thank you for your time and help. It is very much appreciated. (HowTos)