nrfutil and dfu - invalid object

RE: nrfutil and dfu - invalid object

Kenneth — Thu, 14 Nov 2019 13:48:33 GMT

Please create a new devzone case for this issue.

Best regards,
Kenneth

RE: nrfutil and dfu - invalid object

speedycat — Thu, 14 Nov 2019 00:46:56 GMT

I found this post and this made me able to do DFU. `./nrfutil.exe keys display --key pk --format code` displays the code for the dfu_public_key.c file with different byte orders, comparing nrfutil v3.5.1 vs v6.0.0a1. Using the code shown by the old nrfutil made DFU work (however, the updated firmware did not work - I need to find out what's going on. We use a Laird DVK652 instead of PCA10040). But I was able to transfer the .zip file from mobile phone to microcontroller when using code from old nrfutil.

I've been using the `secure_bootloader/pca10040_s132_debug` example from newest NordicSemi SDK16, using Segger Embedded Studio.

RE: nrfutil and dfu - invalid object

AndreasF — Mon, 07 Oct 2019 10:26:28 GMT

Hi.

Great to hear that it works, I'm not sure if anything has changed, probably it has since downgrading worked.

Best regards,

Andreas

RE: nrfutil and dfu - invalid object

SirKazik — Mon, 07 Oct 2019 09:05:35 GMT

I did. It works. I used 3.5.1 version. Did something change with hash calculation?

RE: nrfutil and dfu - invalid object

AndreasF — Mon, 07 Oct 2019 09:02:10 GMT

Hi.

[quote user=""]To be specific: uECC_vli_equal in uECC_verify returns 0.[/quote]

So the signature verification fails then.

Could you try to perhaps downgrade nrfutil?

Best regards,

Andreas