This Article Applies To

Tapo D225(US) V1.0/1.6 - Firmware 1.2.0 Build 250828 Rel.69355n

Tapo D235(EU) V1.0 - Firmware 1.2.1 Build 250926 Rel.64362n

TD25(US) V1.6 - Firmware 1.2.0 Build 250828 Rel.69355n

Description

When the Tapo doorbell D225, D235, and TD25 update to the above firmware versions, you may notice that the doorbell disconnects from the router's WiFi (specifically, the 2.4GHz band of the main network) and cannot reconnect successfully, appearing offline in the Tapo app. Together with the following phenomena:

1. The LED indicator blinks in a cycle: red for 1 second, followed by amber for 6 seconds.

2. The doorbell can return to the configuration mode (LED blinking red and green) after a manual reset, but when re-adding the device, the doorbell fails to connect to the WiFi despite using the correct password.

3. The device's connection will not be affected when the doorbell connects to a guest network.

So far, we have discovered that several reports are all using the same router, the Vodafone Ultra Hub DGM4980VDF.

Workaround

1. Set router DNS to 8.8.8.8 (Google DNS).

2. Reset the doorbell and connect it to the 2.4GHz guest network. 

Troubleshooting Suggestions

If the above workaround doesn't work for you, please follow the troubleshooting steps below when configuring the doorbell:

1. Ensure you are using the correct Wi-Fi password. A good way to verify this is to remove the saved network from your phone and reconnect using the same password. If your phone fails to connect, it means the password is incorrect. How to remove existing wireless network profile on Android&iPhone

2. Make sure your Tapo app is updated. You can try deleting and reinstalling the app. 

3. Verify the WiFi network settings:

• Ensure the WiFi is a 2.4GHz-only network. If both 2.4GHz and 5GHz are enabled for the same SSID, disable the 5GHz.
• Confirm there are no Mac Filtering or Client Isolation enabled for the 2.4GHz network.

4. Move the doorbell closer to the router.

5. Reboot the router.

6. Update router firmware.

Our R&D team is currently working on this case with high priority. We will share updates here if there is any progress. We also encourage users experiencing the same problem to share additional details about their cases, such as:

1. The model of the router;

2. Settings for the router’s main 2.4GHz Wi-Fi network, including:

• SSID (wifi name) >> What elements are included in the SSID, like numbers, letters, or characters? Length?
• The WiFi channel that the 2.4GHz uses. *If Auto is selected, try to find what channel the 2.4GHz wifi is on currently.
• WiFi security type