https://devzone.nordicsemi.com/f/nordic-q-a/120034/mcuboot-problemHi ncs 2.6.1 / toolchain 2.7.0 we have developed a Product using ANNA-B402 (with nRF52833). Now we made a product variant with nRF52833 WLCSP. Both use the same application-binary (with IO mapping at startup). The application uses mcuboot. Theen-USTelligent Community 13Fri, 21 Mar 2025 16:30:27 GMThttps://devzone.nordicsemi.com/thread/528450?ContentTypeID=1Fri, 21 Mar 2025 16:30:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:35cb44e7-989b-4881-8741-27cf8061033aFriedrich<p>Hi&nbsp;</p> <p>i found the cause.&nbsp;</p> <p>The ANNA Modul&nbsp; has DCDC Hardware implemented.</p> <p>The nRF52833 WLCSP Variant does not have DCDC Hardware&nbsp;implemented</p> <p>mcuboot has default value</p> <p>CONFIG_SOC_DCDC_NRF52X=y</p> <p><span>&nbsp;</span></p> <p><span>The&nbsp;Function&nbsp;</span></p> <p><span>z_sys_init_run_level(INIT_LEVEL_PRE_KERNEL_1)</span></p> <p><span>will set&nbsp;</span></p> <p><strong>nrf_power_dcdcen_set(NRF_POWER, true);</strong></p> <p><span>this will lead to strange behaviours ..&nbsp;</span></p> <p><span>&nbsp;</span></p> <p><span>Regards Fri</span></p> <p></p> <p></p><div style="clear:both;"></div>