Wiki2
UnifiAp

Upgrade Unifi AP

File needs to be locala on the network

ssh peter@unifi
upgrade http://192.168.0.16:3002/wiki2/files/uniti-v4.0.15.bin
upgrade http://192.168.0.16:3002/wiki2/files/unifi-v3.9.54.bin

Can also be done through unifi app.

Note also that wifi network configuration is done globally and not for each individual AP. Took some time to figure that out after deleting the previous configuration.