For configuration of the "easyRESCUE-PRO-2Gen" please turn on the device in programming mode. This can be done by pressing the test button for more than 3 seconds and the device will respond with 3 beeps. After that start the app while Bluetooth is enabled. With the button"Scan for easyRESCUE-PRO" you start the Connection process and you see the internal data stored in the device. The MMSIs of up to 8 motherships can be viewed and entered by pressing on the right arrow. We recommend using iOS7 and higher. We also recommend using iPhone 4s and higher.