The present invention is directed to providing customized versions of firmware to a wearable sensor device. The customized versions of the firmware can allow one or more sensors in the wearable sensor device to perform in a manner that is most optimal for a particular user or the particular manner in which the wearable sensor device is used. In some cases, the customizations can include causing the sensors to use a sampling rate that is optimal for one or more activities that the particular user intends to perform while wearing the wearable sensor device.
