you dont have to install any thing its preinstalled.
If you have discover on it should find it on its own, if you don’t set a static ip for the trådfri gateway and add it in the yaml.
Did it work for you? I’m having a really bad time setting this up. It asks for the code, I put the code, but nothing happens.
I tried it with hassbian (with all the libtool stuff installed) and with Hass.io, same thing, after inserting the code, it says unable to connect. I extracted the code (minus the MAC address) from the QR Code on the back of the gateway, and inserted it with copy paste, I don’t know what to do. My RP3 is connected with ethernet.