Problem to upgrade bootloader by application

[Louis]

Need to upgrade bootloader by application code. I have finished to program bootloader image to FLASH. Content is verified correct, comparing to SRC. However, the bootloader seems to be empty after rebooting the device. nRF Go Studio cannot see it as well. I assume that I miss to update MBR. How can I do that? Any simple programming guide for reference?

Thanks.

[Hung Bui]

Hi Louis,

It's possible to update the bootloader you don't need to do that from your application. Please have a look here.

I'm not 100% sure you can combine bootloader and application in one image, but it might be supported by our nRFConnect now. But please try to update bootloader first, for testing. If it works, you can then test bootloader + application update.

[Hoai Nguyen]

Hung Bui My bootloader is using dfu_single_bank. What can i do to update my bootloader? i'm thinking about updating bootloader from aplication like Louis, it is the only way?

[Hung Bui]

I dont see any problem update the bootloader using dfu single bank. You just need to update the application after you have done with updating the bootloader.