Use the custom upgrade option and paste the URL of the firmware file copied from the Ubiquiti downloads page Ubiquiti Help Center 3. Advanced Upgrading (SSH) If the web interface fails, you can use SSH to update: Get the firmware file to your computer. Use SCP to copy the file to the device (e.g., to /tmp/fwupdate.bin Run the following command via SSH: syswrapper.sh upgrade /tmp/fwupdate.bin Use code with caution. Copied to clipboard For USG devices, use: sudo syswrapper.sh upgrade upgrade.tar Ubiquiti Community 4. Recovery/TFTP Method (If Device is Unresponsive)
: Improving how the device handles CPU and memory resources. Upgrade Firmware Version 1.255 Ubnt -UPD- Download