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.