iPhone X: iOS 15 Update

WARNING: Before perform firmware update, always perform phone backup! The author will NOT be held responsibility under any circumstances.

1. Settings > General > Software Update

2. Software Update:
    iOS 15.4.1
    Download and Install

3. Enter Passcode:
    Enter your passcode: [passcode]

4. Terms and Conditions: Agree
    Terms and Conditions: Agree

5. About xx seconds remaining > Preparing Update...

6. Software Update: Install Now

7. Verifying update...

8. Phone auto reboot > Updating with progress bar

9. Software Update Complete Your iPhone has been updated to iOS 15.4.1 > Continue

10. Face ID: Set Up Later

11. iPhone Analytics: Don't Share

12. Display Zoom: Standard
      Continue

13. Welcome to iPhone: Swipe up to get started