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To upgrade firmware via web user interface:

  • Login the web interface of the phone.
  • Browse to Settings → Upgrade.
  • Click Browse and select the firmware from your local system.
  • Click Upgrade to upgrade the firmware. The browser pops up the dialog box “Firmware of the SIP Phone will be updated. It will take 5 minutes to complete. Please don’t power off!”
  • Click OK to confirm upgrade

Note: The firmware upgrade process can take a few minutes to complete. Please ensure that the device does not lose power during this process or you may cause damage to the phone.