If this message appears, it means that the update went wrong and no executable firmware is installed on the device. Therefore a successful update must be installed. Please proceed as follows: 1. Start the LabCom App 2. Ne helyezze az alkalmazást háttérbe 3. Confirm the update popup 4. Select the 'PoolLab OTA' from the Bluetooth list 5. Confirm the update popup again 6. Wait until the update has run successfully Notes: - Do not quit the app - Do not move the app into the background - Bluetooth felszereltség