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]

Im flashing using nrf connect. I used nRF5_SDK_for_Thread_and_Zigbee_v3.1.0_c7c4730/examples/peripheral/blinky/hex/blinky_pca10059_mbr.hex

Booting with a JLink connected and resseting using debugger seems to get the firmware going.

[Simonr]

nicolasp said:

Booting with a JLink connected and resseting using debugger seems to get the firmware going.

 Does this mean you got it to work?

It should not be necessary with a JLink device when the Dongle is in DFU mode and you're using the nRFConnect Programmer app.

Best regards,

Simon