Hello, our engineers team have discussed the problem you menationed and did some tests , pls kindly check below information, tks. Sorry, as usual X1-HUB only supports pairing one remote at the same time, pairing multiple remotes may cause some problems when synchronising settings or upgrading the firmware of the remote. The problem of not being able to upgrade at the moment which is a bug, we will add a new function (pairing a new remote control and unbind the old one automatically) in a subsequent version upgrade. Temporarily , you can try the following ways to upgrade 1.Open the app and pair a new remote control with the hub via Me---X1 Settings---Pair a new X1-Remote with the hub. 2. Take the old remote away from the hub, preferably more than 20m away from a wall or into a metal box (to block the signal) 3. Open the app, Me --- X1 Settings --- firmware update for X1-Remote, you can upgrade after detecting the update. If the progress page of the app is at 0% during the update process, exit the app, plug the hub back in and repeat operations around 1-3 times. Tks for your patience and understanding.