How To Change Mac Address For Ubnt Firmware

1-download putty from here download

2-open putty 

1-your ubnt ip
2-port
3-open

3- Enter your ubnt user (ubtn) and password
4- write ifconfig

5- now we want change wlan and lan
6- Write vi /etc/persistent/rc.poststart
7- Write
ifconfig ath0 down
ifconfig ath0 hw ether 00:15:6d:80:44:55
ifconfig ath0 up

8- press Esc and :x
9- Enter chmod +x /etc/persistent/rc.poststart 

10- Enter cfgmtd -w -p /etc/ and press Enter

11- now your mac address is changer