Failed upgrade to 8.21 on NanoPC T4

Keep continue discussion in this older + longer topic here: RK3399 HDMI output and USB 3.0 not working with Linux 6.1

So it is currently Radxa and FriendlyELEC SBCs with RK3399 SoCs affected, since Linux 6.1.50, and not just DietPi, but the Armbian images themselves as well.