iPhone Stuck on Updating Screen After Failed Update? 6 Fixes

Why this happens

When iOS updates, the phone reboots into a small pre-boot environment that writes the new system to storage and then verifies it. If anything interrupts that write — a cable that shifts, a USB hub that drops, a laptop that sleeps, a download that was truncated, or not enough free space — the verification fails and the phone has no working system to boot into. It stays on the progress screen, or falls back to the recovery mode screen showing a cable and a laptop.

The message The iPhone could not be updated. An unknown error occurred. is a catch-all. It does not mean the phone is dead. It means the update did not finish, and the phone is waiting for a computer to try again.

A loop back to recovery mode after every restart attempt is the key detail: it tells you the installed system is incomplete, so no amount of restarting will get you to the Home Screen. You need to complete or replace the install from a computer.

Fixes to try

Work down the list. The first few are free and take minutes; the last one erases the phone, so leave it until you have tried everything else.

1. Force restart the iPhone

This clears a hung update process. It will not repair a half-written system, but it costs nothing and sometimes the phone finishes booting.

1. Press and quickly release the volume up button.
2. Press and quickly release the volume down button.
3. Press and hold the side button. Keep holding for about 10 seconds, until the Apple logo appears.
4. Let go when you see the logo and wait a few minutes.

If the Apple logo appears and then the recovery screen returns, the update genuinely did not complete. Move on.

2. Leave it connected to power for a while

If the progress bar is still visible and moving, even slowly, do not touch it. Plug the phone into a charger with a known-good cable and give it 30 to 60 minutes. Interrupting a write that is still in progress is what turns a slow update into a stuck one.

If the bar has not moved at all in that time, continue.

3. Retry the update from a computer, done properly

The retry usually fails for the same boring reason the first one did: the connection. Fix the connection before you try again.

1. Use the cable that came with the phone, or another Apple-certified one. Cheap cables cause more of these failures than anything else.
2. Plug into a port directly on the computer, not a hub, dock, monitor or keyboard.
3. On a Mac running macOS Catalina or later, open Finder and select the iPhone in the sidebar. On Windows or an older Mac, use the Apple Devices app or iTunes.
4. Make sure the computer has at least 10 GB of free disk space — the update file is downloaded and unpacked there.
5. Turn off any VPN, and temporarily pause antivirus or firewall software.
6. When prompted, choose Update, not Restore. Update keeps your data.
7. Leave both devices alone until it finishes. Do not open other apps, do not let the laptop sleep, do not unplug.

If it fails again, note the error code shown. Codes such as 4013 or 9 usually point at the USB connection or the cable rather than the phone.

4. Try a different port, cable or computer

A surprising number of these are solved by changing one variable.

1. Try a different USB port on the same machine, ideally one on a different side or controller.
2. Try a different cable.
3. On a Mac, create a temporary new user account, log into it, and run the update from there. This gives you a clean device-support cache, which is where corrupted update files sometimes hide.
4. If you have access to another Mac or PC, try that. A second computer rules out the first one entirely.

5. Revive the iPhone with Apple Configurator

Apple Configurator for Mac, a free download from the Mac App Store, has a Revive option that reinstalls the latest iOS on a phone stuck in recovery mode without erasing your data. It is the middle ground between Update and Restore, and it is underused.

1. Install Apple Configurator on a Mac.
2. Connect the iPhone with a direct cable and put it in recovery mode if it is not already there.
3. When the device appears in Apple Configurator, right-click it and choose Advanced > Revive Device.
4. Confirm and wait. The Mac downloads the current iOS and reinstalls it.

Revive can fail too, and it still needs a stable connection, but it is worth trying before you wipe the phone.

6. Restore the iPhone, then set it up from a backup

This is the last resort because it erases everything on the phone. Do it only after Update and Revive have both failed.

1. Connect the iPhone to the computer and open Finder, the Apple Devices app, or iTunes.
2. Choose Restore. Confirm that you understand the phone will be erased.
3. Wait for the restore to finish. The phone will restart as a fresh device.
4. When asked, restore from your most recent iCloud or computer backup.

If you have no backup and the data matters, stop here and talk to Apple Support before restoring — a repair shop with data-recovery tools may be able to help, and a restore removes that option.

If nothing works

If a restore also fails, or the phone drops straight back to recovery mode after a successful restore, the problem is likely hardware — storage that cannot hold a write. That is not something you can fix from a laptop.

• Contact Apple Support through the Support app or getsupport.apple.com and describe exactly what you tried, including any error codes.
• Book a Genius Bar appointment at an Apple Store or visit an Apple Authorized Service Provider. Bring the cable and, if you can, the computer you used.
• If the phone is under AppleCare+ or still in warranty, say so when you book.
• Before any repair or restore, make sure you know whether you have an iCloud backup. If the phone cannot boot, you cannot make a new one — check iCloud.com or another device signed into the same Apple Account.
• Occasionally a later iOS release installs cleanly where the current one fails. If you are not in a hurry, retrying in a week or two with the newest version is a legitimate option.

FAQ

Will I lose my data if I update from the computer?

No. Choosing Update in Finder, the Apple Devices app or iTunes reinstalls iOS and keeps your photos, messages and apps. Only Restore erases the phone. Revive in Apple Configurator also keeps your data. The risk is that a failed update leaves you with no choice but to restore, which is why a recent backup matters.

How long should the updating screen stay before I worry?

A normal update takes anywhere from a few minutes to about an hour, and older phones with a lot of data sit at the slow end. If the progress bar is moving, wait. If it has not moved at all for an hour, or the phone keeps returning to the recovery screen, treat it as stuck and retry from a computer.

Does being stuck in recovery mode mean the phone is broken?

Usually not. Recovery mode is a normal state the phone falls into when it has no bootable system — it is waiting for a computer. Most phones come out of it after a successful update or revive. It only points to a hardware fault when a restore also fails, or when the phone returns to recovery mode immediately after a restore completes.