Remotely update Ubiquiti AP

SSH to the device. You can get the IP addres from the controller screen. The default username/password is ubnt/ubnt.

upgrade https://dl.ui.com/unifi/firmware/U7PG2/4.3.21.11325/BZ.qca956x.v4.3.21.11325.200922.1139.bin

You can get the latest firmware from https://www.ui.com/download/