DFU example not working

[jonas.woerner]

Hi,

Recently we upgraded from NRF52832 to NRF52840, and as the Development seems to come to an end, one of the last features we need is OTA capability.

currently I am trying to Implement DFU on my application, but I am struggeling.

I downloaded the latest SDK and tried to compile \examples\dfu\secure_bootloader\pca10056_ble project.

after compiling I flashed softdevice (make Flash_Softdevice) and then flashed the bootlader (make Flash) but my board wont advertise.

next step was to try one of the precompiled examples, I successfuly flashed sd_s140_bootloader_buttonless_with_setting_page_dfu_secure_ble_debug_without_bonds.hex, and it worked! I could see the DFUtarg advertising, then I tried to flash the softdevice and bootloader_secure_ble_debug_without_bonds_s140.hex seperately, and again, it did not advertise.

what am I doing wrong?

thanks in advance,

Jonas

[Simon]

jonas.woerner said:

but my application uses the alpha version of the SD140, and the bootloader uses the normal SD140.

Could you specify exactly what SoftDevice you are using for respectively the bootloader and the application. When changing the SoftDevice for an application you may have to do some API related changes to your code. The migration guides can be found along with the SoftDevice after downloading it.

Best regards,

Simon

[jonas.woerner]

I was using S140 5.0.2alpha, but I have updated my main app to use S140 V6.0 and used the bootloader from SDK 15.0, now everything works as expected! :)

[Keith Wakeham]

Is nrfgo going to be updated to fix this problem because right now the "program bootloader" tab just got useless.

[Simon]

As mentioned here and here, nRFgo Studio is outdated and we are not working on the app anymore. Does it work to program the bootloader with nRF Connect for desktop and the programmer app?

Best regards,

Simon

[Moritz]

Ran into the same problem and managed to resolve it quickly thanks to this answer. Shouldn't the makefiles for the dfu examples be adjusted accordingly?