You do not need to unmarry your Tazer or return to stock your FlashCal to get or install the UConnect update. The Jeep's TIPM/PCM and the UConnect unit are two completely separate computer systems.
Poor wording on my part, I guess... I was trying to say that you need engine off for the OTA update to proceed to begin. Actually, from what I gather, you will not get the OTA update notice while you are actively driving. You get the notice when you turn the vehicle off and can only proceed with / start the update if the vehicle is off.. after the OTA update actually starts you can drive while it loads which takes 26 min. I believe.Mine updated while driving and the Jeep was on. The update can only start when in park and the Jeep is not running.