Hi Perran,
Try this image:
#44341 or this one:
#502522 They have a built in WiFi Access Point. This means that you van connect directly to Rune from a PC or smartphone. When you are connected you can sort out your WiFi Router connection problems.
Use the Pi B3 first, this has built-in WiFi which works with the Access Point functionality. Note: some WiFi dongles will not work with the Access Point function. When this is working you can transfer the Micro-SD card to your Pi 2B and it should come to life. You can then configure your second Micro-SD card on the Pi 3B.
janui
To use the Access Point:
SISID = RuneAudioAP
Passphrase = RuneAudio
UI connect URL (from browser): 192.168.5.1
In the first image you can switch off the Access Point via the network configuration screen. In the second image login via SSH and execute the command:
redis-cli hset AccessPoint enabled 0
For details see here:
#97216