This Article Applied to:

Archer BE800 V1 1.2.1  Build 20250108

Phenomenon Description:

We've received feedback from users that after updating the Archer BE800 V1 firmware to the official 1.2.1 Build 20250108 version, certain devices with 10Mbps or 100Mbps connections are unable to access the internet when connected via cable. 

Commonly affected devices include:

• Tado Internet Bridge: IB-01 (10Mbps half-duplex)
• Liftmaster 828LM (10Mbps half-duplex)
• LINKSYS PAP2T VoIP Phone Adapter (10/100Mbps half-duplex)
• Salus iT500 thermostat gateway (10/100Mbps half-duplex)

The Ethernet connection status on the BE800's web UI may appear invalid as shown below (the device is connected to the LAN1 2.5G bps port on the BE800):

These devices worked fine with the BE800 on 1.1.x firmware but have stopped functioning with the new 1.2.1 version. This issue may lead to customers' smart devices going offline, impacting their daily lives.

Workaround:

We understand this can be frustrating.  Our development team has provided beta software to address this issue. If you're experiencing similar issues, please upgrade and install the beta software on your Archer BE800 V1, then check if those devices connect to the internet properly.

Note: Please be sure you have read the Terms and Conditions for TP-Link Beta Firmware before proceeding.

Additional Information

If the above beta firmware doesn't resolve the issue, please provide the following details:
•  Details of the affected devices: Specify the model, hardware version, and firmware version of the devices that cannot connect to the internet via Ethernet cable with the BE550. Also, please verify the Ethernet port specifications (10Mbps or 100Mbps).
•  Did these devices work properly before upgrading the Archer BE550 firmware?

Thank you for your attention!

Related Threads:

[Official Firmware] Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection