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Message: <blockquote data-quote="thetool" data-source="post: 21009" data-attributes="member: 1534">If they just reload what's already there, or over-write with an updated version, that may not clear something like this.If they plug in, and hit "update", the computer goes through a little routine whre it will say "clearing memory", then go into "updating". If you unplug right after "clearing memory", this scrubs the controller of all but the hours and stored codes.  Then you have more of an empty slate to load the program onto.It has worked for me in the past on quirky issues, which sounds like that is what this one may be.You are correct in that only a DSR can completely scrub a controller(legally).....=).</blockquote>