One of my HiFiBerry/PIs does no longer connect to Wifi after upgrade/restart.
It now has a wired connection to my router for debugging/configuration, however my WiFi network no longer appears in the list of available networks. I am not sure but I may have hit 'forget' on it at some point in an attempt to fix the connection problem.
How can I get it to show up again? How can I further diagnose the problem (a networking troubleshooting guide would be extremely helpful)