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    Upgrading Model S firmware for an imported car (no 3G OTA updates; no WiFi w/ FW)

    Hello, Good day! I'd just like to inquire if there's a way of upgrading the firmware (FW) of a Tesla Model S through USB flash drive or through another method. We’re trying to service a Tesla Model S to improve its performance and avoid problems on the 12v aux battery charge/discharge. The...