Can't flash code into NRF5340-DK

[seneryilmaz]

I've installed Zephyr RTOS and built blinky example for NRF5340-DK board. Then, when I tried to flash output hex file into NRF5340, nrfjprog (using "west flash" command) gave me error about there were no NRF device connected to the debugger. I also tried MSD (Drag & Drop) style programming, it failed as well. I previously worked with other NRF development kit boards and never got this type of problem.

[Nicolas Brunner]

Try the answer from this thread:

https://devzone.nordicsemi.com/f/nordic-q-a/70430/unable-to-program-nrf5340dk-with-ses

[KevinA]

The first time I tried to program my nrf5340dk with nrf Connect Programmer IDE it told me the memory was locked/protected (or something like that) and informed me I'd have to erase the chip, I erased everything and then I could see the memory to program it. Using SDK 1.5.0 and the latest nrf command line tools, version 10.12.1 works with the nrf5340 - I'm using Windows 10 - What is your environment? Linux/Windows/Mac?

[seneryilmaz]

My environment is W10 x64

[seneryilmaz]

Didn't work out. Here is the screenshot.

[seneryilmaz]

I've updated command line tools to version 10.12.1 and problem is now gone.