New updated bootloader flash-images are available for 1g, 2g, and 512m EspressoBins through the Armbian download page (here and here).
Stability issues are solved with these updated versions by a refined DDR training algorithm (provided by Marvell).
All available CPU_DDR frequency combinations are there for all boards.
The updated flash images were rebuilt with the following refreshed parts:
A3700-utils-marvell Armada-17.10.3
atfv1.3 armada-17.10.7
uboot armada-17.10.2
Please support Armbian.