nav-u™ System Software Update

Posted: 12/15/2008


A system software update is available to update the NVU-73T nav-u portable navigation system to version 3.02 and to provide the following benefits:

Improvements over system software version 3.00:

  • Adds the Photo Viewer application
  • Adds the Quick Link function
  • Shortens the time to acquire a GPS satellite signal in certain conditions, such as between tall buildings
  • Adds the ability to store the track log on Memory Stick Duo™ media
  • Improves touch panel responsiveness
  • Improves the quality of the calculated route in certain situations
  • Adjusts the font size of the street names that display on the tool bar for improved visibility
  • Improves French TTS (Text To Speech) pronunciation.
  • Corrects TMC reception in Toronto

Improvements in version 3.00 over version 2.00:

  • Improves the POI (Point of Interest) search speed
  • Adds Canadian freeway junction support for the 3D Dual View
  • Improves the city search results when using the address input menu
  • Improves the intersection search results


Improvements in version 2.00 over version 1.00:

  • Improves the route or reroute calculation speed in certain situations
  • Improves the route quality in certain situations
  • Improves the map drawing speed
  • Adds a feature to display the GPS signal receiving status while seeking a signal

How to Tell If You Need the Update

If your nav-u portable navigation system already has system software Version 3.02 and map version 2007b you do not need to install this update. Please follow the steps below to verify the current system software and map versions.

  1. On the nav-u portable navigation system, tap the "MENU" pad to show the Main Menu on the screen.
  2. Tap the "Settings" menu icon, Settings Icon.
  3. At the "Settings" menu, tap "General", scroll to page 5/6, and then tap "Firmware Version".
  4. Take note of the Firmware Version.
  5. Tap the "MENU" pad twice, and then tap the "Settings" menu icon, Settings Icon.
  6. At the "Settings" menu, tap "Map", scroll to page 4/4, and then tap "Map Version".
  7. Take note of the Map Version.
  • If your nav-u portable navigation system shows Firmware Version "3.02" (the suffix such as "cb" or "cg" can be ignored) and Map Version "North America 2007b", your nav-u portable navigation system does not need this update.
  • If your nav-u portable navigation system shows Firmware Version "3.00" (the suffix such as "cb" or "cg" can be ignored) and Map Version "North America 2007b", your nav-u portable navigation system only needs the version 3.02 firmware update. The version 3.02 firmware update is available as a free download from the Sony eSupport site. Please click here to download the System Software Update.
  • If your nav-u portable navigation system shows Firmware Version "1. 00" or "2.00" (the suffix such as "wk/wl" or "ch/cy" can be ignored), your nav-u portable navigation system will need to be updated and the compatible files need to be sent to you on DVD media. Please proceed to the "How to Get the Update for Firmware Versions 1.00 and 2.00" section below.
    WARNING!!: If your firmware version is 1.00 or 2.00, DO NOT DOWNLOAD and install the new firmware. To successfully update your system you must order the free update disc with compatible map data file. Failure to install the compatible map data file will result in a "Map data corrupted" error.

How to Get the Update for Firmware Version 3.00

The version 3.02 firmware update is available as a free download from the Sony eSupport site. Please click here to download the System Software Update.

If you have any questions, or require assistance, please call Sony Support at 1-800-222-7669 (SONY).


How to Get the Update for Firmware Versions 1.00 and 2.00 

If you cannot create a CD on your computer, Sony will provide a free disc containing the firmware update. Please contact Sony Support at 1-800-222-SONY (7669) to place your order.