by rhg135 » Tue Oct 25, 2016 10:33 pm
You could take the armv8 build for the c2 insert the kernel and modules from the rpi3 build and set up the rpi3 bootloader, which I unfortunately know nothing about, and that should get you a working serial console to fix everything else. Assuming it'll even run on the cpu in the rpi3, which it may not. So perhaps you'd need to rebuild it, and that I don't know how.
But, unfortunately, without official support some things won't work (GPU *), but this might help to test at least.