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A “GPS navigation device update service” refers to the process of updating one or more of the following for a standalone navigation device (or in-car system) or GPS unit:

  • Map data: new roads, changed one-ways, new POIs (points of interest).

  • Firmware / software of the device: bug fixes, improved satellite reception, better UI.

  • Traffic / speed-camera databases.

  • Sometimes subscription services (online connectivity) tied to map & traffic updates.

How the update process typically works

While the exact steps depend on the brand/model, the general workflow is:

  1. Connect device to PC (via USB) or insert SD/TF card.  “connect your navigation device to the PC with a USB cable”

  2. Install any required update software (some brands have dedicated update-managers).

  3. Download map/firmware update. Ensure you have enough storage space & good Internet.

  4. Install the update to the device. Do not interrupt power/USB during update.

  5. Check the version & confirm successful update.

  6. Optional: Reboot device, check settings (satellite, language, etc.).

For example: A “Complete Process To Update The GPS Unit” outlined by one service: connect, check updates in manager, verify latest version according to year, wait for update. 
Another document emphasises: “New roads, closed streets… ideal to update every time there is an update release