crossblade

Yes, I understand, but I don't have tools needed for that. I tried scraping with a needle, but look like solder is deeper under the chip. And by the way official seller will ship me new board for almost free (just buying tracking number for 0.91$).

Looks like problem isn't in software...

Tnx! I'll try it. But looks like problem isn't in armbian - I've installed ubuntu image from orange pi download resources and there wired connection doesn't work too... Can you tell me how behave orange and green leds when wire 100% works? Mine orange blinks every 2 seconds and green flashes chaotically when wire is plugged in.

ok. Will try original Orange Pi Prime images, to be sure problem is in Armbian...

Just got mine Prime and installed on microsd Armbian-server for that. After setting up root password and new user, have edited /etc/network/interfaces to have uncommented these lines source /etc/network/interfaces.d/* auto eth0 iface eth0 inet static address 192.168.0.106 netmask 255.255.255.0 gateway 192.168.0.1 dns-nameservers 8.8.8.8 8.8.4.4 auto lo iface lo inet loopback every manual says it should be easy like that... but it doesn't work where to dig next?