Getting Secure Bootloader example in SDK 15 to run

[maxx44]

I'm trying to learn the DFU process and how to include it in a project under development using SDK 15 and the nRF52 DK.  I programmed the DK with the S132 Softdevice and the pca10040_ble bootlader.  I'm using an Android tablet running nRF Connect to test.   I can see DFUTARG and connect (LED 3 goes on).  I copied one of the DFU test files to the tablet, hrs_application_s132.zip.  When I press the DFU button in nRF Connect, a menu comes up to select what type of file.  I chose Distribution packet (ZIP).  A menu then comes up for "Open From" and a list of locations for the file.  I picked SD card on the tablet where I copied the .zip file.  I can see the .zip file, but when I select it all I get is a display of the contents of the .zip file, and they appear grayed out.

What am I missing to get the DFU running?

Thanks,  Max

[maxx44]

Bjorn,

OK. I was hoping the keys in the examples were set to match. 

Please leave this pending.  I won't  get back to it until next week.  I'll post status then.

Thanks again,

Max

[bjorn-spockeli]

The default public key in the bootloader example and the private key used to sign the DFU test images should match. However, to rule out the key issue I would recommend generating your own public-private key pair. Will keep it open. 

[maxx44]

Success!  I went through the steps in "Getting started with Nordic's Secure DFU bootloader" and used the generated keys to recompile a bootloader and create a zip download for the blinky example.  Not an easy process, but it did eventually work for me.

You may be hearing from me again as my target platform is a nRF52810.  I thought I had best step through the well supported nRF52832 DFU first.

I'll mark this as verified.  Thanks for the good help guiding me through it.

Max