How do I fix Error 21 on iPhone 4s?

How do I fix Error 21 on iPhone 4s?

Here are the steps to fix the iPhone error 21.

  1. Restart iTunes by updating iTunes.
  2. Update iTunes to Repair iPhone Error 21.
  3. Turning Off or Adjusting Your Anti-Virus.
  4. Checking the Host File.
  5. Unplugging Any Unnecessary USB Devices.
  6. Checking the Sensor Cable.
  7. Using DFU Mode to Fix iTunes Error 21.

What to do if iTunes Cannot restore iPhone?

Put your device in recovery mode and set it up again If you’re using iTunes, make sure you have the latest version of iTunes. On a Mac with macOS Catalina, open Finder. On a Mac with macOS Mojave or earlier, or on a PC, open iTunes. If iTunes is already open, close it, then open it again.

How do I fix Error 21?

If you are encountering an error code 21 message, there are a number of things you could try to solve the error code issue.

  1. Check if the destination phone number is correct.
  2. Check your account balance.
  3. Restart your phone.
  4. Swap the SIM and Reset.
  5. Contact Customer support.
  6. Replace your SIM.

How do you connect a disabled iPhone To iTunes?

If your screen reads “iPhone is disabled,” the most likely cause is too many wrong passcode attempts. Sometimes this can happen without you realizing it, if the phone is in your pocket or a bag. You will need to erase your device to remove the lock and passcode, then re-sync it with iTunes.

Can’t restore iPhone because error occurred?

Unplug your iPhone/iPad/iPod from the lightning cable and do a full restart of the iPhone. For Windows users, reset Windows Sockets with a winsock reset and then restart your PC. For Mac users, reboot your Mac.

How do I restore my iPhone to factory settings with iTunes?

Connect your iPhone to a computer with a USB cable and open iTunes. On the left side of the screen, navigate to “Summary”. Next, press a button titled “Restore iPhone…”. A prompt will appear, asking you to confirm the factory reset.

How to fix iTunes error 21 when restoring iPhone?

Method 7: Using DFU Mode to Fix iTunes Error 21. In this method, the iPhone would need to enter DFU Mode. This mode is the deepest type of recovery available and should be able to make Error 21 vanish forever. Only try this method if all other options have ended up not producing results. Preparation.

Why won’t my iPhone restore?

It might have happened to you that you’re trying to restore your iPhone but no matter what you do, iPhone won’t restore because an iTunes error 21 or iPhone Error 21 keeps popping up! It’s like a whack-a-mole, you keep trying to restore, but that infernal iPhone Error 21 comes again.

How to fix iTunes not responding on iPhone?

Step 1: First of all, download Tenorshare TunesCare and click “Fix All iTunes Issues” to fix your iTunes on computer. Step 2: If your iPhone performs abnormally, then just click “Repair iTunes” to start downloading iTunes drives for repairing.

How do I fix error 21?

I faced Error 21 recently and the only way I was able to solve it was by removing the battery and leaving the phone for 2 minutes. I put the battery back, connected the phone to iTunes and the restore worked like a charm. PS: I am guessing that all the phone needed was a complete hard reset. Was this answer helpful?