If your "Service Port" on the back doesn't work, it's a hardware problem, perhaps it's broken... you should send for repair or have it repaired.

Remember that tools such JapharFlasher/DreamUp/FerrariFiller etc need to use for better use the RJ45/Ethernet cable from the box to the Router/Modem and a USB Cable from the PC to the back of the box SERVICE PORT.

Admin