SMEG 3.17.A.R3 update specifically refers to a firmware version
Some early 317AR3 units lack stable Wi-Fi modules. Download the firmware file from SMEG Professional portal (or ask support) onto a FAT32-formatted USB stick. Insert into the service port behind the bottom hinge cover. The fridge will auto-flash. smeg 317ar3 update fixed
Here is a blog post template you can use to announce this update. Fixed: Smeg Update 317ar3 — What You Need to Know SMEG 3
The "fixed" aspects of this update primarily addressed functional annoyances and system stability: Power On: Ghost Alarms: The "door open" alarm
Ghost Alarms: The "door open" alarm sounds even when the unit is sealed.