nrf51822 dfu error

[Darren16]

Hi, I have a problem with DFU OTA.

I use nRF Toolbox's DFU to upload nrf51822 QFAC, most times it works.

However several times, after the app altered "** bytes transferred in ** seconds", my device crashed, the chip did not work. And I could not update firmware via SWDIO+SWCLK any more.

Thanks for your hints in advance!

p.s. The Type is 'Application', and the .zip file used is always the same one.

[Darren16]

NO, no mesh is created. the other devices are all advertising.

I have a watchdog in my program, is it possible that the watchdog causes the error.

[bjorn-spockeli]

Could you try to disable the WDT in your application and see if that resoves the issue?