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Follow this procedure to upgrade the firmware in Device Firmware Upgrade (DFU) mode through the Bluetooth
Low Energy (BLE) interface.
1. Download the latest DFU package of the
[RAK4600)]https://downloads.rakwireless.com/LoRa/RAK4600/Firmware/).
2. Install the mobile app named “nRF Connect” or “nRF Master Control Panel (BLE)", which are developed by
the Nordic Semiconductor company.
3. Open the Nordic mobile app and scan for the BLE signal.
4. After resetting the RAK4600, its BLE interface should broadcast a device name with the format
“RUI_XX:XX:XX” for 60 seconds, as shown in Figure 73. Refer to the
to know more.
Figure 73: RAK4600 BLE device name
5. Select the device and press CONNECT.
6. Select Secure DFU Service and enable the “Indications” option by pressing the icon highlighted in red in
Figure 74.