I'm trying to get either Debian Core or FriendlyCore (I'm presuming that is some kind of Ubuntu derivative) to run on my R4S. It is running OpenWRT from the OpenWRT site (]rk3399-sd-friendlywrt-22.03-20230210.img.gz) and it runs OK. So the R4S is not to blame. Both the Debian Core image and the Frie...