In many cases, ISPs like Optus push updates automatically to your modem. If you need to perform a manual update, follow these general steps: Optus Sagemcom F@ST 5366 4G/LTE WiFi Modem - White
You often can't manually upload third-party bin files. The Performance Delta sagemcom f-st 5366 lte firmware
A: Possibly, but not easily. You need to “unlock” the router using a serial console and software like sagemcom_unlocker (community tool). Without that, the signature check will reject a different ISP’s firmware. Your simplest solution is to ask your new ISP for a router swap. In many cases, ISPs like Optus push updates
Update procedure: Use the device’s web UI or ISP’s remote update mechanism. Avoid power interruptions during flashing. If the ISP manages updates via TR‑069, customers may have limited manual control. In many cases