https://devzone.nordicsemi.com/f/nordic-q-a/94399/mcuboot-do-not-find-spi-ext-flash-areasHi, I am using nrf52840, NCS v2.1.2. I add MCUboot in my project, but got ‘Failed reading sectors; BOOT_MAX_IMG_SECTORS=256 - too small?’. I add some log in MCUboot, and found MCUboot got a wrong flash areas numbre. Here is my log: And myen-USTelligent Community 13Thu, 01 Dec 2022 01:09:19 GMThttps://devzone.nordicsemi.com/thread/398428?ContentTypeID=1Thu, 01 Dec 2022 01:09:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0dc9629f-afc7-401a-9a77-dc93f9543390yang.hu<p>effective.</p> <p>thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/398310?ContentTypeID=1Wed, 30 Nov 2022 11:50:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:92c5106e-e4f8-4211-a87c-b53bf78f6429Sigurd<p>Hi,</p> <p>Did you in your child_image/mcuboot.conf, set this config ?</p> <p>CONFIG_PM_OVERRIDE_EXTERNAL_DRIVER_CHECK=y</p><div style="clear:both;"></div>