Hello all, long time lurker here :)
I need some help connecting to wifi (or someone to tell me my Pi is currently unsupported). 48 hours and loads of unsuccesful attempts have gotten the best of me. Time to ask for help!
After giving up yesterday I decided to do a fresh image burn (just to be sure) of Amibian and just configured my ssid+pw again using the "wifi" command, still nothing. When I type it ifconfig -a, i get eth) and Lo but no Wlan. I'm sick of staring at this blue screen, I want to get to the fun bits :)
Registered just to comment on this. The above solution did not work for me with a new rpi 3 b+ and the latest amibian. Seems to have been a problem with the specific driver referenced in the armiga repo. Instead I followed these instructions and got it working: https://www.linuxquestions.org/questions/slackware-arm-108/raspberry-pi-3-b-wifi-nic-not-found-4175627137/#post5840054 TL;DR -- get the driver from the official raspberry pi debian repo.