If support is added to A6v2(US), will it be flashable through vendor Web GUI, or TFTP is the only method to flash?
UPDATE:
Ok I flashed my Archer C6v2(RU).
Essential part here was the presence of intermediate device between the router and PC (switch, hub, another router) - otherwise, the PC might just not be in time to wake up it's Ethernet interface for pick up TFTP packets of the recovery sequence.