: Navigate to Maintenance or Advanced Settings > Software Update to check if an update is available or to upload a file provided by your ISP.
Do not disconnect power or interrupt the process while the update is installing, as this can permanently damage the router. Optimizing Performance for "Extra Quality" Service sagemcom fast 4315 firmware extra quality
: Sometimes unlocks advanced settings like Quality of Service (QoS) or custom port forwarding that may be restricted in older versions. How to Update Your Sagemcom F@st 4315 : Navigate to Maintenance or Advanced Settings >