Besides restarting the system, no other steps needed in my case. However, at one of the previous installations I had issues when I tried to install broadcom-wl before running the proposed updates. I.e. first let the system perform all the updates, only afterwords install rpmfusion repos and broadcom-wl.
One clear indicator that wifi was detected, was the Wi-Fi entry in the Settings app’s menu. Before that, the menu entry was missing.
