Simply call updateFirmware() function. This will update the device will the latest available firmware.
Caution
Performing firmware update with Polar devices will erase all data inside the device, including SDK offline recordings. Please make sure to sync any data you wish to retrieve before doing it.
Note that
doFirstTimeUse()is not necessary to do after firmware update as there is automatic backup to send user settings back to the device as the last step of the firmware update process.