Understanding/debugging DFU?

[MarieMaurer]

Hello,

I have added DFU to our project. In general it works, at least parts of it.

Assume I receive often/always NRF_DFU_EVT_DFU_FAILED, how do I find out, what is the reason for it?

Is there some documentation which handles these case? Perhaps function calls to get additional info?

Or is the right way to log exchanged data, analyze them, compare them to suggested sequences?

Where do I find documentation of exchanged data?

Many thanks!

Best regards,

Marie

[Vidar Berg]

Thanks. So it's apparently failing on the bootloader version check. The bootloader version number must be incremented on every update. An update with the same version will not be accepted,  please refer to the NRF_DFU_APP_ACCEPT_SAME_VERSION config options for details.