9161 devkit development planned: External flash needed? Firmware/app compatibility?https://devzone.nordicsemi.com/f/nordic-q-a/113822/9161-devkit-development-planned-external-flash-needed-firmware-app-compatibilityHi, as a beginner in nrf world I plan to design a mini devkit with 9161. I plan SW pins connector for it to program/debug via Segger j-link and additional UART-USB interface with 2102 to enable USB monitoring/configuring. However, in &quot;nRF9160 Hardwareen-USTelligent Community 13Tue, 13 Aug 2024 07:15:37 GMTRE: 9161 devkit development planned: External flash needed? Firmware/app compatibility?https://devzone.nordicsemi.com/thread/497934?ContentTypeID=1Tue, 13 Aug 2024 07:15:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c48c618-c805-46ce-b53a-d4a61f5629ce&#216;yvind<p>Hello,</p> [quote user=""]<strong>Question 1</strong>: Does it mean that the planned devkit design must incorporate the external flash memory to upgrade the modem firmware?[/quote] <p>Yes, in order for your device to support a full modem firmware upgrade, your design should have an external flash memory incorporated.</p> [quote user=""]<p><strong>Question 2</strong>: Could you kindly give me some hints / links to understand the modem firmware version logic?</p> <p></p> <p></p>[/quote] <p>Modem firmware v2.x.y is to be used with&nbsp;nRF91x1 devices, while modem firmware v1.x.y is for&nbsp;nRF9160 SIP. This is due to added modem functionality in the nRF91x1 devices.&nbsp;</p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>RE: 9161 devkit development planned: External flash needed? Firmware/app compatibility?https://devzone.nordicsemi.com/thread/497794?ContentTypeID=1Mon, 12 Aug 2024 11:41:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c496556a-1886-4cca-8f92-a15c9d2d65e0marsal<p>Er, regarding the Question 2, it was possibly my misunderstanding: 2.0.1 version is currently the last one version, correct?<br />Question 1 still relevant, thank you.</p><div style="clear:both;"></div>