Updating Unifi Cloud Key Firmware
SSH to cloud key (ubnt is username)
cd /tmp
You can find the newest firmare on this this web page
https://www.ui.com/download/unifi/default/default/unifi-cloud-key-firmware-01310
Under UniFi Cloud Key firmware, then click download and it will give you the direct download url.
wget https://dl.ubnt.com/unifi/cloudkey/firmware/UCK/UCK.mtk7623.v1.1.19.f4a17b0.210204.0232.bin
ubnt-systool fwupdate UCK.mtk7623.v1.1.19.f4a17b0.210204.0232.bin
---- OLD ----
wget https://dl.ui.com/unifi/cloudkey/firmware/UCK/UCK.mtk7623.v1.1.10.62d69a2.200326.0316.bin
ubnt-systool fwupdate UCK.mtk7623.v1.1.10.62d69a2.200326.0316.bin