Secure DFU bootloader: application not starting

[mr91]

Hello,

I have a problem with secure bootloader. what I did:

1. Flash SoftDevice 130 using nRFgo Studio.
2. Compiling \examples\dfu\bootloader_secure\ (i removed the error regarding the key).
3. Flashing the bootloader with Keil (using nrfjprog.exe for flashing).

Unfortunately, the bootloader seems not to run. There is no advertisement "DfuTarg". When I compile the buttonless dfu example and flash it with Keil, there is still no response. So the bootloader does not start the application. There are no debug messages over UART either.

However, when I flash the precompiled debug version (secure_dfu_secure_dfu_ble_s130_pca10028_debug.hex), the bootloader is advertising as "DfuTarg". When I load an application (using Keil or DFU with nrfConnect´), it does not leave the bootloader mode.

Can you tell me whats wrong?

Thank you!

Edit: I use SD130 on nRF51

[daniel77]

This is the further guide on IOS nRF Connect and nRF Toolbox to get the buttonless DFU triggered from the app. I got the buttonless DFU working finally.

Thanks Hong Bui! Yes, my phone was cached on previous service and only able to see the DFU service after turning on & off the Bluetooth.

Connect with the device "Nordice_Template" via IOS nRF Connect and discover the "Unknown Service".

Click on the service to discover the "Unknown Characteristics". Click on the right button (3 parallel arrows down button) to enable the service.

The button will turn into a cross out arrow down as below.

Click arrow up button to write 0x01 to the characteristics

The value will change to 0x200101. The device will be disconnected and the nRF51 DK will light up the LED 3.

Find the device advertised as "DfuTarg" in nRF Toolbox and select it as DFU target.

Upload the buttonless DFU app .zip file.