This image should have now the “workaround” implemented for your cheap sh$%& box:
CoreELEC-Amlogic-ne.arm-20.0-Nexus_devel_20221003163621-Generic.img.gz
Maybe the data is not burned as it’s a used and refurbished eMMC what is assembled in your hardware. I would not trust this peace of hardware, I guess it will fail soon…
EDIT:
Image removed
For devices like yours please use the option config.ini:
Add on bottom coreelec='mac=<your mac>' and it should be permanent available.
So in your case coreelec='mac=02:ad:32:01:70:2a'
EDIT:
Maybe this is working as well:
coreelec='mac=${ethaddr}'