nrf52840 dongle alway boot in dfu

[nicolasp]

Tried to flash ncp .hex for pca10059 on a brand new dongle and now it is stuck in dfu (pulsing red led). The process worked on a second dongle without any issues.

Something is wrong with the dongle?

[Simonr]

Hi

How are you flashing your Dongle? To program it from DFU mode, please see the Program application using nRF Connect Programmer section in our nRF52840 Dongle programming tutorial.

Best regards,

Simon

[nicolasp]

No, its only working while the debugger is connected. I also cant seem to erase uicr with nrfjprog, reading bootloader location address alway return weird values and not 0xffffffff after nrfjprog -e . I think the mcu is faulty.