If your oven is completely bricked and will not connect to Wi-Fi, you will need to manually flash the firmware. Visit the official Smeg Support Portal on a computer.
The "SMEG 317AR3 update fixed" is a community-driven solution to a real set of problems. While the update won't add new modern features, it is widely regarded as a crucial, recommended step for anyone experiencing the described glitches, restoring stability and reliability to your vehicle's infotainment system. smeg 317ar3 update fixed