I usually build a new armbian full os image, apply some kernel options and have no problems booting a sopine64.
The last known good version for me was:
Armbian 5.51 / Kernel 4.14.54
The latest (and starting with 5.57) with Kernel 4.17.16 only seem to 'half boot' - they start up uboot but fail to load the OS and instead attempt to do a network boot over TFTP.
The errors go by so fast that I can't really read it and have to resort to trying to video capture it and the monitor seems to be slow to initialize and i only see the tail end of the errors scroll by.
I am sure a lot changed between 5.51 and 5.57 - I noticed a new version of uboot.
Somewhat at a loss as to how to resolve this.. I tried rebuilding an image every few days in hoping a fix was merged back into the code base.