AX3600 problem after install OpenWrt

when i use TFTP and configure pc and application like here Xiaomi ax3600 bricked - #112 by sqrwv

after make reset ... led blink orange , later it lights steadily orange and then lights up white

applicaton TFTP see nothing in TFTP Server and in DHCP Server i see 192.168.31.2 ....

Firewall in windows is off