https://devzone.nordicsemi.com/f/nordic-q-a/82983/zephyr-on-nrf9160Dear DevZone: I am developing an evaluation board with the nRF9160 SiP model, but I have some doubts with the software. Does nRF9160 SiP come factory preloaded with any version of Zephyr? Which? My intention is to know if I need the SEGGER programmeren-USTelligent Community 13Tue, 21 Dec 2021 07:45:14 GMThttps://devzone.nordicsemi.com/thread/344491?ContentTypeID=1Tue, 21 Dec 2021 07:45:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c90a76ca-c11a-4035-ab4c-7806a3672d4fH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> [quote user=""]Does nRF9160 SiP come factory preloaded with any version of Zephyr? Which?[/quote] <p>No, the application core is empty.</p> [quote user=""]My intention is to know if I need the SEGGER programmer for the SWD port or if a version of Zephyr is already preloaded and I can do the reprogramming by OTA.[/quote] <p>You need to update the modem and flash your application over SWD.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>