S120 Error: Invalid CRC on DFU

[Gabriel C.]

Hi all,

I am trying to update the bootloader, softdevice and application all in a ZIP package through DFU, and at 99% after upload it stop and throws the error:

[DFU] Remote DFU error: REMOTE DFU INVALID CRC ERROR

I am using the nrf tool to generate the zip file with the following command:

nrf dfu genpkg --application app.bin --application- version 0xFFFFFFFF --softdevice sd.hex --bootloader bl.hex --dev-type 0xFFFF --d ev-revision 0xFFFF --sd-req 0xFFFE dfu.zip

Do I need to generate any kind of CRC manually? As far as I understood the nrf tool does it all automatically.

What am I missing? As far as I know I did not changed any of the versions required in my app.

Thanks a lot for your help!

Regards,

Gabriel.

[Hung Bui]

Hi Gabriel,

The current DFU doesn't support a zip package with all 3 binary of application, bootloader and softdevice.

Could you try again with:

• Application
• Bootloader
• Softdevice
• Softdevice + bootloader

And let me know if something doesn't work.

[Gabriel C.]

So the code for MS-DOS posted in my question what exactly does when executed and all 3 files are in the same folder? It compiles all of them in a zip? Only the softdevice and the bootloader? It is a mistake in the documentation?

What command do I need to compile for example only softdevice and bootloader?

Thanks a lot for your support!

[Hung Bui]

The nrf.exe tool won't care if your bootloader support 3 files combination or not. It will simply bundle them into one .zip.

If you only want to bundle softdevice and bootloader, you should not put the "application app.bin" when calling nrf.exe.