Firmware v1.0.9.66 is generally considered a update. It is not a major overhaul of the operating system, but rather a maintenance release focused on backend security and minor bug squashing. For users on older firmware (like v1.0.4.x), it is a recommended upgrade. However, for users looking for modern features (like OFDMA or newer security protocols), this version represents the ceiling of what older hardware can do.
(Note: If this firmware version refers to a different device manufacturer—such as a specific specialized industrial router—please clarify the device brand, as version numbers can overlap between companies.) firmware v1.0.9.66
It addressed minor sync issues that occurred with the Mi Fit (now Zepp Life) app. Known Issues: Firmware v1
A minor but appreciated change in this version was the refinement of the LED control. It allowed for more reliable turning off of the LED lights on the router and satellite, which was a pain point for users with the hardware in bedrooms. However, for users looking for modern features (like