Hey Everyone,
 

We have received reports that after updating the Archer BE400/BE6500 to firmware version 1.2.3 Build 20260107 rel.48335, Wi-Fi may not work correctly if only one Wi-Fi band is turned on. For example, if 2.4 GHz is turned off, devices may not be able to connect to 5 GHz. Alternatively, if 5 GHz is turned off, devices may not be able to connect to 2.4 GHz; Wi-Fi works properly only when both the 2.4 GHz and 5 GHz bands are enabled.
 

Applies to:

Archer BE400_V1_1.2.3 Build 20260107 rel.48335

Archer BE6500_V1_1.2.3 Build 20260107 rel.48335

Available Solution:

The cause of this unexpected behavior has been identified, and our R&D department has released a beta firmware version that user ashish7adlakha has tested and confirmed fixes the behavior.

If your Archer BE400/BE6500_V1 device also experiences this anomaly after updating to version 1.2.3, please try manually downloading and installing the beta firmware at the link below to remedy the anomaly:
 

Note: 

• It is always recommended to save a copy of the router's Backup Config file before upgrading or downgrading firmware.
   
• For instructions on how to upgrade your router's firmware, please see: How to Upgrade the Firmware on TP-Link Wi-Fi Routers
   
• There will be an official firmware release in the future. If you are not comfortable using beta firmware, please wait for the official release or contact our support teams for assistance.
   
• Pre-release and Beta firmware should be used at your own discretion. We cannot guarantee the functionality of features or technical support for Pre-Release or Beta Firmware.

Additional Information

As always, we value your feedback. If you happen to encounter any concerns during or after the router firmware upgrade, please leave a message below and provide the following information. Your feedback helps us continuously improve and provide you with better products and support.

Please provide detailed information, including but not limited to:

• A complete network topology diagram or description.
   
• The device's configuration or operating mode.
   
• Any other information or feedback regarding your experience after upgrading your Archer BE400/BE6500 to this beta build of firmware 1.4.2.

Thank you for your patience and cooperation.