Kankun KK-SP3 Brick

my smart plug Kankun KK-SP3 not working anymore
by mistake I write 0 > /sbin/reboot
now KK-SP3 just turn blue light without any respond there is no wifi and I can`t reset by clicking button for 5 sec

If the device has its wireless interface disabled, i.e. unreachable, you will have to pry open the case and solder cables to the serial headers on the pcb to fix it.......
but those links not working anymore!
please any body can guide me to fix my KK-SP3
thank you so much