After the latest update on Radxa zero (KDE plasma), the old problem with the WiFi/Bluetooth chip has returned. It will not scan WiFi or connect to bluetooth keyboard. Only after random sequences of running “sudo modprobe brcmfmac” then “sudo rmmod brcmfmac” and restarting, which now often hangs, I may get 3 minutes of WiFi connectivity before it is lost again. On reboot I might get another 3 mins, or just unresponsive chip.
Before this update, WiFi / Bluetooth had been working flawlessly