Before pressing any buttons, it is crucial to understand the scope of a factory reset. The HG8245H is not just a simple modem; it is a gateway that handles fiber-optic signal conversion, routing, Wi-Fi broadcasting, and often VoIP (telephone) services.
Go to > WAN Configuration . You need to create a new WAN connection. The parameters are provided by your ISP. Common setups include: hg8245h factory reset