New image up: https://dietpi.com/downloads/images/DietPi_OdroidC1-ARMv7-Buster.7z
Armbian upgraded their legacy (two partitions, uImage) image to Linux 5.4 and this finally seems to have solved the issue and boots 
.
New image up: https://dietpi.com/downloads/images/DietPi_OdroidC1-ARMv7-Buster.7z
Armbian upgraded their legacy (two partitions, uImage) image to Linux 5.4 and this finally seems to have solved the issue and boots .