DFU update with encrypted bin file

RE: DFU update with encrypted bin file

bjorn-spockeli — Wed, 28 Sep 2016 12:53:56 GMT

No problem @arjun! Glad to hear that you found the cause of the issue. :)

RE: DFU update with encrypted bin file

Arjun — Wed, 28 Sep 2016 12:51:53 GMT

Hi Bjorn,

I found why I was facing the issue. Very silly mistake and my bad. The zip was created with a folder directory. This meant the app was not able find json. Sorry about the trouble. But your answer pointed out this problem. Thank you very much

RE: DFU update with encrypted bin file

Arjun — Wed, 28 Sep 2016 12:13:24 GMT

Hi Bjorn,

Thanks for your reply. There is the manifest.json file for sure in the package. In any case I am attaching the zip file with the question. Regarding SDK12 we will start looking into this. Thanks for the information.

RE: DFU update with encrypted bin file

bjorn-spockeli — Wed, 28 Sep 2016 11:56:28 GMT

Hi Arjun,

firstly I strongly recommend that you migrate SDK 12 and use the production-ready Secure DFU bootloader instead of the experimental one from SDK v10.

No, I do not think that the app verifies the SHA hash before starting the OTA DFU process, it is checked when the entire image is received on the nRF side.

The error displayed by the app

[DFU] Opening file failed: The zip file must contain an Application, a Softdevice and/or a Bootloader

suggests that the application cannot find the manifest.json file in zip file. If you take a look at the ArchiveInputStream function, here is the GitHub link, that parses the zip, you'll see that the app only throws this exeption when its in compatibility mode. Could you attach the zip-file that generates the error?