Apple products handle Bluetooth Low Energy (BLE) connections different than Android products. There is a limit on how much data can be transferred at one time through the BLE connection on iPhones, so this causes the download to take longer than if the download was done with an Android phone. To not interrupt the download and to make sure it has a chance to fully download, please ensure that you have sufficient time to allow the download to fully complete, so we recommend to do this update before you go to bed. Or you can do the update through the computer as well with the control unit hardwired to your computer using the provided USB charging/data cord. You can find the latest updates on our website here:
https://ucleardigital.com/firmware