ButaneBoy Posted May 27, 2019 Share Posted May 27, 2019 Hi, anyone have any experience changing the HDD in the 3G head unit? I've got a failed HDD and wondered if I buy a 2nd hand MMI 3G head unit off eBay can I swap the HDD to my own unit. I'm assuming the head unit is coded to the car on the PCB and not the HDD because non HDD units must be coded that way. Why would Audi have a different way of coding head units right? Quote Link to comment Share on other sites More sharing options...
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