I understood, FW RST had to pull up to 3.3 v

@György-Farkas How do I hold the reset button down, without the docking station?

After flashing the sysupgrade does not start. After power-on, the led is lit for 10 seconds, then 25 seconds flickers and goes out.

The process of updating the firmware, perform the following commands:
cd /tmp
wget http://repo.onion.io/omega2/images/omega2p-v0.1.10-b163.bin
sysupgrade -n omega2p-v0.1.10-b163.bin

Further, it was reported:
killall: watchdog: no process killed
Sending TERM to remaining processes ... udhcpc ntpd mountd

And then the connection was lost, the led was blinking, after about 2 min went out, after waiting 6 minutes I turned off the power as said in the instructions for omega2+ and switch on the power again.
Video: https://goo.gl/photos/XcXK4QnrRYfa54Wn7
At the same power another module Omega2 works.