Required for updating large map files (e.g., all of Europe) or performing major system firmware upgrades if OTA fails or isn't available. Step-by-Step Manual Firmware Download Process
Bluetooth protocols change frequently. If your iPhone or Android phone disconnects frequently, fails to sync contacts, or has poor call quality, a firmware update is often the only fix. New firmware ensures compatibility with the latest iOS and Android versions.
This means the newer firmware is only for later hardware revisions (e.g., 2023 models). Your older hardware cannot run it. Do not force it.
