Warning:
Firmware upgrade failure may permanently damage the unit and cause it to malfunction. Do not interrupt the firmware upgrade process by disconnecting it from the network or unplugging its power from the power outlet once the firmware upgrade process has begun. Never perform a firmware upgrade over wireless connections or via remote access connections. If the items listed in the release notes do not address an issue you are experiencing, please do not upgrade the firmware.
Note:
You must perform a factory reset after a firmware upgrade. If you would like to keep your original settings; please back up your configuration file first before performing the firmware upgrade. Please see "How to Back Up Configuration File" & "How to Restore Configuration File" sections below for instructions.
Firmware Upgrade
After the firmware has been selected, click Update.
How to Back Up Configuration File