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I've been reading through some of the JB4 stuff and still haven't figured out how you change the map on it if you don't have a cell phone or laptop. Would I need to remove the JB4 from the truck and plug it into my PC (with the BMS data cable) to go into it to change the mapping? It seems odd they don't have any type of control switch available to change the map with it installed in the vehicle. I don't have a cell phone and don't really plan on getting one anytime soon.
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