Downloading and installing iOS 14 firmware for an iPhone X is a straightforward process, typically used for restoring a device or performing a "clean" install via a computer.
If you're using a Mac with macOS Catalina or later, you can use Finder to update your iPhone X: iphone x ios 14 firmware download
This site archives all official Apple firmware. It’s safe, ad-supported but clean. Downloading and installing iOS 14 firmware for an
