https://devzone.nordicsemi.com/f/nordic-q-a/75252/i-cannot-open-dev-ttyacm0-when-i-m-installing-the-node-cli-flash-imei--f-path-to-firmware-hexHey all, I&#39;m trying to run the node cli flash &quot;imei&quot; -f /path/to/firmware.hex command on the terminal. It prompts as ERROR flash &lt;deviceId&gt; failed!, ERROR Error: No such file or directory, cannot open /dev/ttyACM0 Can anyone help me with this in solvingen-USTelligent Community 13Tue, 25 May 2021 12:02:16 GMThttps://devzone.nordicsemi.com/thread/311435?ContentTypeID=1Tue, 25 May 2021 12:02:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d9fa7ee-b319-4efe-9edd-08e5d868ddf3Markus Tacker (he/him)<p>Make sure your device is connected to `/dev/ttyACM0`. If you use another port, you can specify it as an argument.</p> <p>See `node cli flash --help` for details.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/310457?ContentTypeID=1Wed, 19 May 2021 12:56:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dd28265c-0a7f-4cf8-8cee-eec226b79dfbJONATHAN LL<p>Hi,<br /><br />Can you share som more info and elaborate on the goal you have and what you are doing. I dont fully understand how to help right now.&nbsp;&nbsp;<br /><br />Is this what you are trying ?<br /><a href="https://nordicsemiconductor.github.io/asset-tracker-cloud-docs/v1.5.x/docs/devices/FlashingCertificate/CLI.html">Provisioning using the CLI — nRF Asset Tracker 11589ff09d3c1d2a550056bc01d7469730c860b3 documentation (nordicsemiconductor.github.io)<br /></a><a href="https://bifravst.github.io/bifravst/docs/devices/FlashingCertificate.html">Provisioning the certificate — Bifravst v10.4.8 documentation</a><a href="https://nordicsemiconductor.github.io/asset-tracker-cloud-docs/v1.5.x/docs/devices/FlashingCertificate/CLI.html"></a><br /><br /><br />Do you have the nrf9160 connected to ACM0 or som other port?</p><div style="clear:both;"></div>