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Connect to Wi-Fi.Go to Settings > iCloud > iCloud Backup > Tap “Back Up Now.”
Step 1: Backup Your iPhone
Visit IPSW Website > Select your iPhone model > Download the latest iOS 17 IPSW file.
Step 2: Download the iOS IPSW File
Go to Settings > [Your Name] > Find My Name > Turn off “Find My iPhone” and enter your Apple ID password.
Step 3: Disable Find My iPhone
Use a USB cable > Open iTunes (Windows) or Finder (macOS).
Step 4: Connect Your iPhone to Your Computer
For iPhone 8 and later: Quickly press and release Volume Up, then Volume Down, then hold the Side button until recovery mode appears.
Step 5: Enter Recovery Mode
Click “Restore iPhone” while holding Option (Mac) or Shift (Windows) > Select the downloaded IPSW file > Click “Open” to start the restore process.
Step 6: Restore iOS 17
Follow on-screen setup instructions > Choose “Restore from iCloud Backup” or “Restore from iTunes Backup” to restore your data.
Step 7: Set Up Your iPhone
With this easy step by step guidance, you can quickly downgrade from iOS 18 to iOS 17. This method is very quick, saving you lots of time as well!