Secure BLE DFU example doesn't run

[zolotiyeruki]

I am working through link this tutorial and I've been able to successfully complete the steps up to D3. I'm using the bootloader_secure_ble example from SDK13 on an nRF52840 with SoftDevice s140.

I made sure to follow the steps correctly--erase the chip, program the softdevice, and program the bootloader. However, it doesn't appear that the bootloader is actually running--nrfjprog indicates that it was successfully programmed and verified, but no LED turns on (leds_init() should turn one of them on), and the device is not advertising.

I'm at a loss at the moment as to how to debug this issue. Does anyone have any suggestions?

[MartinBL]

1. Are you only programming bootloader and softdevice? No application?
2. Are you using nrfjprog to program the device? Have you remembered to reset the device after programming (nrfjprog -r)?

[zolotiyeruki]

1. yes. I programmed the softdevice using nRFgo studio, then programmed the bootloader with nrfjprog
2. I used nrfjprog to program the bootloader. I thought I was resetting it afterward by pressing the reset button on the PDK, but that didn't work. Using the nrfjprog -r command worked, though!