Fill IP address of 2N® Access Unit to your browser (IP address - How to get IP address of 2N® Access Unit?)
Go to System - Maintenance - Configuration
Click button Upgrade Firmware
Select file with firmware and click to Upload button.
You can download firmware for 2N® Access Unit at official 2n web page. Section: Download - Firmware
Unit will be restarted after upgrade. The process takes about 30 s
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