Hi Kobbe.
I have that problem. My computer is an Orange Pi + 2e and the first start the wifi worked properly, but after updating the system (Armbian_5.14_Orangepipc_Debian_jessie_3.4.112_desktop) no longer works. I read on the site OPI, at each reboot a new MAC address is assigned. I have some idea of how it works Linux can not find the way to find a solution. Please, you can help me? Thanks.