nRF5340 firmware in pca10056 v3.0.1

[zero]

Dear support team,
The j-link firmware of my nRF52840-DK v3.0.1 is no longer available. Please provide the firmware of nRF5340 so that I can repair the DK.

BR,

zero

[Sigurd Hellesvik]

Hi,

The j-link firmware of my nRF52840-DK v3.0.1 is no longer available.

How do you see this?

Regards,
Sigurd Hellesvik

[zero]

Hi 

Sigurd Hellesvik said:

How do you see this?

The nRF5340 in nRF52840-DK has lost its firmware. As a result, the 52840 chip on the development board cannot be burned and debugged. Please provide the nrf5340 firmware of 52840-DK. I will try to see if this development board can be repaired.

[Sigurd Hellesvik]

We can not provide firmware to the debugger.
However, the debugger firmware should never change in normal DK operation.
Especially on the new ones which I do not think can enter bootloader mode.
Maybe we should try to figure out what is not working here first.
How can you know that the nRF5340 has lost the firmware, other than that it is not responding?

[zero]

Because I connected the swdio and swclk of nRF5340, and then erased the firmware through the nrfjprog --recover command.

[Sigurd Hellesvik]

Ah,

Sigurd Hellesvik said:

We can not provide firmware to the debugger.

This is what I think I recall, but I will check again if we can provide the firmware.

[Sigurd Hellesvik]

Good thing I checked, I was wrong.
Segger provides the binary. Since you have JLink installed you likely have it on your PC already.

If not you should be able to download it from https://www.segger.com/downloads/jlink/.

Could you let me know if it works or not?

Disclaimer: I can not guarantee that that firmware works, as I have not tested it myself

[Sigurd Hellesvik]

Looking more at this, I find that the .bin is missing the bootloader.

And I checked, and am not allowed to share the bootloader for this.
In this case, it will be a bit hard to reprogram the nRF5340.

By the way, what was your use-case  for recovering the interface IC?