Linux on MXQ (PCB: S805Q_V2.0) m8b_m201_v1@23a35625
Seems to be also known as the HD18Q "black box". https://www.ebay.de/itm/153205410117 ("NEU MXQ S805 Smart 1GB+ 8GB Smart TV Box Android 4.4 Quad Core 1.5 G WIFI", seller "SILVESTRAS RUNTA Network Tech Co. Ltd"), EUR 14,99
I can boot with
meson8b_m201d.dtb and wired Ethernet works.
U-boot thinks it is a 512 MB device. Linux does, too. The SDK used seems to be named "s805_0701_512M":
root@vegas805:~# strings /mnt/lib/hw/camera.amlogic.so | grep home/