diff --git a/source/_components/tradfri.markdown b/source/_components/tradfri.markdown
index 0f85a2a644e..020475edc01 100644
--- a/source/_components/tradfri.markdown
+++ b/source/_components/tradfri.markdown
@@ -48,3 +48,6 @@ Do not use the `api_key` variable. The key is only needed once at initial setup.
 Please make sure you have `autoconf` installed (`apt-get install autoconf`) if you want to use this component. Also, installing some dependencies might take considerable time (>1h) on slow devices. You might have to use `sudo` when installing `autoconf`.
 
 </p>
+
+## {% linkable_title Troubleshooting %}
+- Firmware updates: After updating the firmware of your Trådfri gateway it might be necessary to repeat the configuration process. If you encounter problems, delete `.tradfri_psk.conf`, restart Home Assistant, when prompted enter the security key and click configure, just like during initial setup. (Possible errors: ```Fatal DTLS error: code 115```)