Unifi AP manual firmware upgrade

A couple of AP were set on temporary controller a long time ago and erased from memory to maintain.

Recently I just installed and set new controller on proper Ubuntu Server.

Adoption failed, of course. I tried adopt & update from controller, it failed. So I decided to adopt & update manually.

Here are steps I did for adopting and updating the firmware.

• Make sure your controller is updated.
• Set factory default for the AP by pressing and holding reset button.
• Connect AP to the network and wait for being discovered by controller.
• Default IP will be 192.168.1.20 and ID:password will be ubnt:ubnt
• Download the latest firmware from Unifi website, https://www.ui.com/download/unifi/
• You need to transfer the latest firmware to AP
• For Linux controller, 

scp -oKexAlgorithms=+diffie-hellman-group1-sha1 downloaded-firmware-file-name ubnt@192.168.1.20:/tmp/fwupdate.bin

• Note. Replace downloaded-firmware-file-name with your actual firmware file name. Run the command from the folder where downloaded file is.
• For Windows controller,
• You need to download putty from https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
• Run same command above from command window (press Windows key + R and type cmd)
• Once transfer completed, adopt AP from controller.
• Once adoption completed, connect to AP via SSH
• To see SSH authentication of controller, you need to enable advanced features from Setting-Site-Services. Click APPLY CHANGES and refresh the page.

• Check username and password (you can see password by pressing eye icon).

• Once you connected to AP, run below command.

syswrapper.sh upgrade2 &

• Now it's adopted and updated.