RE: Issues with settings_storage erased after BLE DFU and inability to assign HEX to a partition using Partition Manager

Ivenhor — Mon, 12 May 2025 13:13:36 GMT

Thanks, your reply helped on both problems.

Amanda Hsieh — Fri, 09 May 2025 21:05:22 GMT

Hi,

[quote user=""]Is there any MCUboot or Zephyr behavior we might be missing regarding retention of NVS/Settings partitions during DFU?[/quote]

If you are using the Android version of "nrf connect," there is the options : settings->Mcu Manager options->Erase application setting

For iOS, see this post.

[quote user=""]Have we understood the purpose of this mechanism correctly?[/quote]

That's correct.

[quote user=""]Are there any specific requirements that must be followed?[/quote]

You can check:

There are no typos in the property name (it must match the partition name and end with _PM_HEX_FILE).
The HEX file is valid and at the correct address.
If you are using sysbuild, try to set it in the sysbuild.cmake under your application.

Regards,
Amanda H.