To check the firmware version of your Classe 100x and the availability of updates, access from the DOOR ENTRY App to the specific submenu "Settings" using the Hamburger button in the upper left part of the App; in the "Firmware Update" section the status of your Class 100x is reported and if an update is available.
If an update is available, with a smartphone connected to the same WiFi as the Classe 100x, download the new firmware and then update the video door entry unit.