https://devzone.nordicsemi.com/f/nordic-q-a/115324/getting-unable-to-find-bootable-image-in-nrf53402024-10-08 14:41:40.001000 I: w25q32jv@0: 4 MiBy flash 2024-10-08 14:41:40.017000 *** Booting nRF Connect SDK v3.5.99-ncs1-1 *** 2024-10-08 14:41:40.023000 I: Starting bootloader 2024-10-08 14:41:40.023000 I: Primary image: magic=unset, swap_type=0x1en-USTelligent Community 13Wed, 09 Oct 2024 10:05:13 GMThttps://devzone.nordicsemi.com/thread/505507?ContentTypeID=1Wed, 09 Oct 2024 10:05:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97edcb70-18ef-4b87-a35f-c28d43638518Shanmugam<p>Thanks , We reduce our application code and it worked. Now low into how to reduce the size .</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/505362?ContentTypeID=1Tue, 08 Oct 2024 13:10:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7509cb3f-acf0-43f0-8e00-229c0df2919dVidar Berg<p>Hello,</p> <p>Please provide more information about your setup and how you are programming the device (which hex file you are loading, etc). The error suggests that there is no valid application in the primary slot.</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>