Did you mean :
Board B860H / HG680P
SoC Amlogic S905X
CPU : Quad (4) core ARM Cortex-A53 @ 1.5 GHz
GPU : penta-core Mali-450MP GPU @ 750 MHz
and i think the image is kinda like this :
Armbian_20.10_Arm-64_bullseye_current_5.9.0_desktop.img.xz
This device uses Amlogic S905X SoC