A small number of NETGEAR WAX620 and WAX628 access points are unable to complete the firmware update process without a factory reset. If your WAX620 or WAX628 is affected by this issue, you might see the following symptoms:
- Firmware update from the Insight app or Cloud Portal: An upgrade failed message appears.
- Automatic firmware update from the device UI: A dialog box with "Firmware upgrade failure" appears after downloading the firmware image.
- Manual firmware update from the device UI: A dialog box with "Select a valid file format" appears when uploading a firmware image.
To resolve this issue, factory default your access point and update the firmware again.
For more information about how to factory default your access point using the Insight app or Cloud Portal, see How do I reset an Insight Managed Switch or Wireless Access Point to factory default settings in Insight?.
For more information about how to factory default your access point using the device UI, see the WAX620 User Manual or WAX628 User Manual.
Last Updated:07/07/2025
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Article ID: 000065047