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I just spoke with Alex at Mission Performance as I successfully flashed my M340i a week ago and asked if the dealer now updates/flashes my car, will it then lock my ECU forcing me to send it to MP. I'm having the known iDrive/Car Play issues and want the dealer to try to fix it. Alex said if I flash it back to stock and leave it "Unlocked" then it should protect it no matter what the dealer does. He did say there was a very "minor" chance the dealer could cause it to lock. I may be the guinea pig and do this.
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