You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

4 points

I get an error 21 when trying to restore my iPhone

Trying to restore my iPhone that is stuck on apple logo. Keep getting error 21. What is this and how can i fix it?

[Re-Titled by Moderator]

iPhone 7, iOS 14

Posted on Jan 6, 2022 4:57 AM

Top-ranking reply

Level 10

103,911 points

Posted on Jan 6, 2022 6:59 AM

If you see one of the errors below, you might have a hardware issue:

Here's what to check. Try again after each step:

If iTunes is already open, quit and reopen it.
Check your third-party security software.
Make sure that your USB cable, computer, and network are reliable. Then try twice more to restore your device.
Check for outdated or modified software.

If you still see the error, contact Apple Support.

View in context

Similar questions