I have multiple RE900XD devices running at a number of properties. Some weeks ago one of the devices upgraded via the tether app to firmware 1.0.10 from 1.03. Weeks later none of the other devices have managed to find the new firmware and remain on the old . I have tried without success to locate the 1.0.10 firmware to do manual upgrades. All these devices are connected to the same BE550 routers. What gives. 

I must say TP LINK leave alot to be desired at updating their support sites with the latest firmware their devices are downloading. Weeks to months later and multiple devices all running on different firmware versions.