nRF52840 dongle bootloader update

[ilia]

Hello,

I tried to update bootloader on the dongle via DFU, but It failed.

The dongle uses OpenBootloader, so it does not check signature for firmware packages. But the OpenBootloader requires bootloader packages to be signed.

Is it possible to find private key, that used in open bootloader, to sign my bootloader package? Or should I flash my bootloader manually?

[Sigurd]

Hi,

ilia said:

Is it possible to find private key, that used in open bootloader, to sign my bootloader package?

No.

ilia said:

Or should I flash my bootloader manually?

Yes, see this post for more information.

[ilia]

Thank you