diff --git a/FAQ.md b/FAQ.md index 5d90bd6b..ade3df3c 100644 --- a/FAQ.md +++ b/FAQ.md @@ -161,7 +161,11 @@ We've also seen reports then when a specific LED light bulb was hooked up near o All you can really do is check the solder joints, move the device closer to your Access Point. If all else fails, replace the device. ### Weaker Wi-Fi signal after upgrade -In some cases the Wi-Fi signal strength (RSSI) drops significantly after upgrading to a newer version, specially when upgrading the Arduino core version. In such a case it is good to save the device configuration and run [`Reset 5`](Commands#reset) command which erases all flash and resets parameters to firmware defaults but keeps Wi-Fi settings. This also deletes Wi-Fi calibration data and after a restart Wi-Fi will re-calibrate. After this is done you will need to configure your device back to its previous settings. +On an ESP82xx, Wi-Fi calibration is sensitive to the power supplied. If this changes substantially (e.g., you add a sensor, configure a new Tasmota feature, upgrade the firmware or Arduino Core, etc.), the device's Wi-Fi calibration may not be set properly any longer. The Wi-Fi signal strength (RSSI) can drop significantly and impact Wi-Fi performance. In such a case, the Wi-Fi calibration needs to be deleted to force the device to re-calibrate Wi-Fi after it restarts. +1. **Save the device configuration** +2. Run [`Reset 5`](Commands#reset) in the Console. This command deletes Wi-Fi calibration data, erases all flash memory, and resets parameters to firmware defaults _but keeps your Wi-Fi network credentials_ +3. The device will restart +4. **Restore your device configuration from the _step 1_ backup** ## MQTT ### Cannot connect to my MQTT broker