Ubiquiti - CLI - Downgrade/Upgrade Firmware

SSH into the device.

ssh ubnt@192.168.1.15

returns:

The authenticity of host '192.168.1.15 (192.168.1.15)' can't be established.
ECDSA key fingerprint is SHA256:...
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.1.1' (ECDSA) to the list of known hosts.
ubnt@192.168.1.1's password:

Download the file locally

Determine the firmware to download from https://www.ui.com/download/unifi/.

Confirm it is a .bin firmware file.

cd /tmp
wget https://dl.ui.com/unifi/firmware/U7PG2/4.0.80.10875/BZ.qca956x.v4.0.80.10875.200111.2335.bin

NOTE: If you do not have internet access on the device, try the following:

Download the firmware on another machine.

Copy the firmware to the Ubiquiti device.

scp /foldername/firmwarefile.bin ubnt@IP-of-UAP-or-Switch:/tmp/fwupdate.bin

For example

scp BZ.qca956x.v4.0.80.10875.200111.2335.bin ubnt@192.168.1.15:/tmp/fwupdate.bin

Rename the download to fwupdate.bin

cp BZ.qca956x.v4.0.80.10875.200111.2335.bin fwupdate.bin

Downgrade/Upgrade the Firmware

upgradesyswrapper.sh upgrade2 &

NOTE: Getting an “Invalid Firmware” error when upgrading via SSH might be caused by installing an incorrect version first.

Correct this by going to the tmp folder and deleting fwupdate.bin first and then trying the upgrade command once more (making sure it was in the correct folder in the Controller).

See: https://help.ui.com/hc/en-us/articles/204910064-UniFi-Upgrading-firmware-image-via-SSH

NOTE: To Reset to default: