Diagnostics for Nuvi310 and Bluetooth

 

While you starting your unit press bottom left corner then the unit will ask you if you really want to start maintenance mode or not, just click on Yes, from new menu click view Diagnostics, then press Next many times till you get Bluetooth Status, click Updt to update then Yes, wait fore some time then reboot your unit… Done

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NickJr Nuvi 3597LMT