Updating to iOS 14.7

Dear community members,

Hope you all are doing fine. I’m using iPhone SE 1 St Gen with iOS 14.2. While trying to update from 14.2 to 14.7 my phone downloads the update and begins to install. But as soon as it begins the installation my phone reboots and nothing happens(Back to 14.2) How can I prevent this issue. Thanks In advance!