As always you can easily update the firmware using a USB-C cable and a computer: https://card10.badge.events.ccc.de/firmware/firmwareupdate/

Bluetooth pairing has been complete redone and is more secure now. Simply enter the Bluetooth app and pair any device to your card10badge:

Sadly this also means that you will have to re-pair your card10badge with your phone. Old pairings are not valid anymore.

The card10badge now also has experimental support for the optical SpO2 sensor. Sadly we are still missing correct calibration values for the sensor.

You can now set the home app directly from the main menu. The new user guide (work in progress) in the wiki explains how: https://card10.badge.events.ccc.de/userguide/menu-system/#selecting-a-default-app

There are many more changes. Have a look at the change log: https://git.card10.badge.events.ccc.de/card10/firmware/blob/master/CHANGELOG.md#v116-2020-12-04-pandemic-potato

Boot splash picture by Thorsten Schroeder: https://www.flickr.com/photos/------------------------------/48588467066/