https://devzone.nordicsemi.com/f/nordic-q-a/69718/thingy-91---1-4-0---no-usb-serial-outputHave a brand new Thingy 91, latest modem firmware and asset tracker firmware: thingy91_debug_ltem_2020-10-30_5522ca2b.hex. But within the LTE monitor app, nothing shows up. When the device is plugged in, it shows as a &quot;zephyr usb&quot; drive. I have a 9160en-USTelligent Community 13Mon, 21 Dec 2020 22:21:19 GMThttps://devzone.nordicsemi.com/thread/286177?ContentTypeID=1Mon, 21 Dec 2020 22:21:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1fe431ad-66f5-479a-9738-0b6a32f75ec0Application Ninja<p>OK, yes, updating this latest firmware fixes the issue, thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/286026?ContentTypeID=1Mon, 21 Dec 2020 11:56:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d3c0a9c5-2fa2-4619-bc86-7b54ec2020d1Application Ninja<p>Sure, I&#39;ll try this later today / tonight and report back. Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/286025?ContentTypeID=1Mon, 21 Dec 2020 11:53:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6de97f46-e230-4f45-af91-1d26f0cb3c7eDidrik Rokhaug<p>Hi,</p> <p>Could you try to upgrade the firmware on the nRF52840 to the newest version of the connectivity bridge?</p> <p>As you have a nRF9160DK, using that is the easiest way of programming the Thingy: <a href="https://infocenter.nordicsemi.com/topic/ug_nc_programmer/UG/nrf_connect_programmer/ncp_pgm_thingy91_debugprobe.html">https://infocenter.nordicsemi.com/topic/ug_nc_programmer/UG/nrf_connect_programmer/ncp_pgm_thingy91_debugprobe.html</a></p> <p>Remember to put the &#39;SWD Select&#39; switch on the Thingy to the &#39;nRF52&#39; position, and use the thingy91_nrf52_connectivity_bridge_&lt;date&gt;_&lt;sha&gt;.hex image in the img_app_bl folder.</p> <p>Best regards,</p> <p>Didrik</p><div style="clear:both;"></div>