https://devzone.nordicsemi.com/f/nordic-q-a/111705/nrf9160-no-startup-with-floating-misoHello, we noticed for one of our boards that the nRF9160 is not able to startup with a floating MISO pin on the SPI where the flash is configured in device tree (SPI1 / P0.12). Although we only made some tests with a not fully populated board withen-USTelligent Community 13Tue, 11 Jun 2024 14:51:11 GMThttps://devzone.nordicsemi.com/thread/488364?ContentTypeID=1Tue, 11 Jun 2024 14:51:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:be298263-bae7-4742-a7d1-2f794356f904Hakon[quote user="Bernhard"]On the DK there is also the external flash on this pin, you would have to unpopulate the flash to see this effect.[/quote] <p>Do you see the same behavior if you change the SPI pins in the overlay?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/486976?ContentTypeID=1Sat, 01 Jun 2024 12:16:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b513e663-ad49-4b8c-9632-ff7b8930824dBernhard<p>Hello,</p> <p>in this case the bootloader seems to not jump into main application at all:</p> <p><pre class="ui-code" data-mode="text">*** Booting nRF Connect SDK v2.5.2 ***</pre></p> <p></p> <p>On the DK there is also the external flash on this pin, you would have to unpopulate the flash to see this effect.</p> <p></p> <p>Best regards,<br />Bernhard</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/486937?ContentTypeID=1Fri, 31 May 2024 14:00:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:293448c7-dc1e-4110-b5bc-ad9c4e16e8eeHakon<p>Hello,</p> <p>do you get any errors or faults in the log? Is the issue reproducible on a DK?</p><div style="clear:both;"></div>