As usual if there is new firmware, the app will pop prompts, if there is no prompts which mean you have done it,
Per remote can not connect the hub, pls open the app and connect to the hub first.
After connecting to the hub, operate Me----X1 settings---pair with a new X1-Remote in the app, the hub pairing function will be enabled, suggest press the right button of the remote at first , then press the off button, hold them around 5-6s until the pairing appears in the remote screen.