https://devzone.nordicsemi.com/f/nordic-q-a/81915/mesh-provisioning-data-is-lost-after-ble-dfuAfter performing firmware update (of application) using nRF Connect app, device running Mesh becomes unprovisioned. Mesh SDK is v5.0.0, nRF52 SDK 17.0.2. Bootloader looks similar to \examples\dfu\secure_bootloader\pca10040_s132_ble. Is provisioningen-USTelligent Community 13Mon, 22 Nov 2021 15:28:56 GMThttps://devzone.nordicsemi.com/thread/340159?ContentTypeID=1Mon, 22 Nov 2021 15:28:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f78d531f-1d35-4bc0-ba01-155628aeabbdElfving<p>Hello!</p> [quote user=""]Is provisioning data stored in Application Data region? How to&nbsp;check its location?[/quote] <p>Take a look at this response by <a href="https://devzone.nordicsemi.com/f/nordic-q-a/34232/where-is-provisioner-information-stored-in-flash/131736#131736">Terje describing it</a>. More <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.meshsdk.v5.0.0%2Fgroup__DEVICE__STATE__MANAGER.html">info on the DSM can be found here</a>.</p> [quote user=""]There is also&nbsp;NRF_DFU_APP_DATA_AREA_SIZE 16384 defined in bootloader project, however I do not see where it is used.[/quote] <p>I will have to get back to you on that.</p> [quote user=""]After performing firmware update (of application) using nRF Connect app, device running Mesh becomes unprovisioned.[/quote] <p>For secure DFU bootloader I believe <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v17.1.0%2Flib_bootloader_dfu_banks.html&amp;anchor=lib_bootloader_dfu_appdata">this is the setting you are looking for. </a></p> [quote user=""]Is it possible to read out (dump) application data region to compare content before and after device update?[/quote] <p>Yes, you can use nrfjprog for this.&nbsp;</p> <p>nrfjprog --readcode dump.hex</p> <p>Best regards,</p> <p>Elfving</p><div style="clear:both;"></div>