And I had a typo in my commands, “images” instead of “image”, so without correcting that, the download (and installation) would have failed. Did you fix that to have the kernel package downloaded correctly?
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8126a-2.fw for module r8169
W: Possible missing firmware /lib/firmware/rockchip/dptx.bin for module rockchipdrm
Okay, still need one with R5C to test. On GitHub however, we have a case where the kernel with this patch fails to boot, just no idea yet why, or how it can even be (as the patch is pretty uncritical, even if it would not work).
You can ignore this. The armbian-firmware package misses a few firmware binaries for certain network drivers, while all network drivers are added to the initramfs, regardless which ones are really used by the device. So it warns if any firmware binary for any network driver is missing.