My Deco app suddenly showed all three M5 units as offline. I factory-reset one unit and tried to reconnect it via the app, but the setup failed. After searching these forums, I found posts indicating this issue started after the September 2025 firmware update. Has TP-Link acknowledged this bug? It appears my M5's pairing status may have been permanently broken by the upgrade. Is there a known fix or rollback method?
@_yuen_ There is a beta firmware download link below 👇 you can download it and install it directly from Web UI and your issue will be resolved.
🔴 Extract the zip file first and install the .bin file 🔴
https://static.tp-link.com/upload/beta/2026/202603/20260310/M5_RSA2048_en_1.9.3_Build_20260115_Rel.77855_up.zip
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