Update on Mar 6, 2025:

We're pleased to offer a new pre-release version 1.1.1 Build 20250306 for Archer BE550 for testing in your real network. This update aims to enhance overall system stability and address the issue that certain 10/100Mbps devices cannot access the internet via the 2.5G LAN ports. We strongly recommend upgrading to this version to improve your experience:

Archer BE550 Pre-release Firmware Enhances the Overall System Stability

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This Article Applied to:

Archer BE550 V1 1.1.1 Build 20241230

Phenomenon Description:

We've received feedback from users that after updating the Archer BE550 V1 firmware to the official 1.1.1 Build 20241230 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 BE550's web UI may appear invalid as shown below (the device is connected to the LAN1 2.5G bps port on the BE550):

These devices worked fine with the BE550 on 1.0.x firmware but have stopped functioning with the new 1.1.1 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 BE550 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!

Update Log:

Feb 25th, 2025:

Updated the beta firmware to include an additional fix mentioned in this thread.

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Archer BE550 Pre-release Firmware Enhances the Overall System Stability