If you update your foc.us v2 to the latest 2.0 release you will get the following extra features:

1. polarity menu
2. session logs + uploading ble api
3. force reboot (long press)
4. battery optimized
5. low battery shutdown
6. set/get time ble api
7. improved power-up time
8. device’s state in ble advertising packet

For further details keep reading or click here for update instructions