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FieldFox Firmware Upgrade Instructions, within A.04.xx to A.05.xx

To update the FieldFox N9912A firmware from A.04.xx and later:

  1. Check the firmware release revision is A.04.00 or later. Press System (7), press Service Diagnostics, then press System Information. Confirm that the firmware revision is A.04.00 or later.
  2. Go to the FieldFox Handheld Analyzer Firmware Archive page and download the desired N9912A_xxxxxxx.zip file to a PC. (Do not copy the zip file to the USB flash drive.)
  3. Prepare the USB flash drive. Check that there are no file names in the root directory that begin with N99.....
  4. Right click on the N9912A_xxxxxxx.zip file and make the appropriate menu selection to extract the single compressed file to a USB flash drive. Copy the file to the root directory on the USB flash drive.
  5. Connect the AC/DC power adapter or confirm that the battery power is greater than 30%.
  6. Press and hold the FieldFox white power button to turn the unit OFF (not Stand By mode).
  7. Insert the USB flash drive in one of the FieldFox USB connectors. Note: insert only one USB flash drive when updating firmware.
  8. Press the FieldFox white power On button. After a short wait, you should see the Upgrade Firmware screen.
  9. Press Start to load the firmware update from the USB flash drive. Checkboxes appear on the screen as the update progresses. Important: Do not power OFF during the firmware update process. Use the AC/DC adapter if battery power is low.
  10. When prompted, remove the USB flash drive. The FieldFox will shut down and restart automatically. Wait for the FieldFox to enter normal operation in its default measurement mode before pressing any keys.
  11. To check the firmware release revision, press System (7), press Service Diagnostics, then press System Information.

To update the FieldFox N9923A and N9923AN firmware, from A.05.xx and later:

  1. Go to the FieldFox Handheld Analyzer Firmware Archive page and download the desired N9923A_xxxxxxx.zip file to a PC. (Do not copy the zip file to the USB flash drive.)
  2. Prepare the USB flash drive. Check that there are no file names in the root directory that begin with N99.....
  3. Right click on the N9923A_xxxxxxx.zip file and make the appropriate menu selection to extract the single compressed file to a USB flash drive. Copy the file to the root directory on the USB flash drive.
  4. Connect the AC/DC power adapter or confirm that the battery power is greater than 30%.
  5. Press and hold the FieldFox white power button to turn the unit OFF (not Stand By mode).
  6. Insert the USB flash drive in one of the FieldFox USB connectors. Note: insert only one USB flash drive when updating firmware.
  7. Press the FieldFox white power On button. After a short wait, you should see the Upgrade Firmware screen.
  8. Press Start to load the firmware update from the USB flash drive. Checkboxes appear on the screen as the update progresses. Important: Do not power OFF during the firmware update process. Use the AC/DC adapter if battery power is low.
  9. When prompted, remove the USB flash drive. The FieldFox will shut down and restart automatically. Wait for the FieldFox to enter normal operation in its default measurement mode before pressing any keys.
  10. To check the firmware release revision, press System (7), press Service Diagnostics, then press System Information.

Troubleshooting the Firmware Update process

If the firmware update process fails, try using a different USB flash drive. Some USB flash drives are not compatible with the FieldFox, refer to the FAQ