I wanted to report that I was unable to boot with the "Bionic minimal 20.02.0-rc1" image "Bionic minimal 19.11.6 current" did not work either
The red onboard is led flashing nothin else works.
The Bionic download link on the top of the page is dead as well.
With the same board, SD-card, power supply and USB cable
I had no problem so far running the "Buster 20.02.0-rc1 current" image (beside some "armbian-configuration" flaws
Did not try any further debugging so far