Go to "Start" then "Run" type this -> telnet 192.168.254.1
-------------------------------
-----Welcome to ATP Client------
-------------------------------
Login: wimax
Password:wimax820
ATP>cmd SetUserMode super <enter>
ATP>shell <enter>
/ # cd bin <enter>
/bin #
/bin # telnetd <enter>
/bin #
/bin # equipcmd setAssemblyenable <enter>
Enable assembly success/bin #
/bin #
/bin # equipcmd setserialnum 500810118xxxxxxx <enter>
Set sn success/bin #
/bin #
/bin # equipcmd setmacaddr 78:1D:BA:XXXXXX <enter>
Set HWaddr success/bin #
/bin #
/bin # equipcmd swversion display
software version: V100R001PHLC08B025
pcb version: 16843009
cfe version: BM622i
display version success/bin #
/bin # exit <enter>
ATP>logout
then reboot ur device
Another process
Login: wimax
Password:wimax820
ATP>cmd SetUserMode super <enter>
ATP>shell <enter>
/ # cd bin <enter>
/bin #
/bin # telnetd <enter>
/bin #
/bin # equipcmd setAssemblyenable <enter>
Enable assembly success/bin #
/bin #
/bin # equipcmd setserialnum 500810118xxxxxxx
Set sn success/bin #
/bin #
/bin # equipcmd setmacaddr 78:1D:BA:XXXXXX
Set HWaddr success/bin #
/bin #
/bin # equipcmd swversion display
software version: V100R001PHLC08B025
pcb version: 16843009
cfe version: BM622i
display version
success/bin #
/bin # exit <enter>
ATP>logout
then reboot ur device
credits to dgit23