How to Restore an iPhone Using iTunes or Finder: Step-by-Step
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Quick Answer: How do I factory restore my iPhone using a computer?
To restore your iPhone, connect it to your computer using a USB cable. On macOS Catalina or later, open Finder and select your iPhone in the sidebar. On Windows or older macOS versions, open iTunes. Click on the Summary or General tab, select Restore iPhone, and confirm your choice. This process will erase your data and reinstall the latest iOS firmware.
A factory restore is the ultimate software troubleshooting step for forgotten passcodes, system crashes, or boot loops. It overwrites the operating system with a fresh copy of iOS. In our laboratory, our testing team regularly performs software rebuilds. We have found that a wired computer interface is more stable than an on-device reset when dealing with corrupted system partitions. This guide details how to restore your iPhone using iTunes or macOS Finder.
Deciding Between Restore Methods
Before initiating a restore, it is critical to understand the depth of recovery required. Depending on the stability of your iOS installation, you may need a standard restore, Recovery Mode, or a deep Device Firmware Update (DFU). Below is a breakdown of when to use each method:
| Restore Method | Primary Use Case | Data Recovery Potential | Target Firmware Partition |
|---|---|---|---|
| Standard Restore | General cleanup, selling the phone | Restorable via backup | Standard OS Partition |
| Recovery Mode | Stuck on Apple logo, boot loops | Erases all data | Recovery OS Kernel |
| DFU Mode Restore | Severely corrupted bootloaders | Erases all data | Bootloader (iBoot) |
If you are locked out of your device due to a forgotten PIN, a standard restore will fail because you cannot bypass the lock screen to establish a connection with the computer. In such cases, you must proceed with an alternative approach. Learn more by reading our dedicated guide on what to do if you forgot your iPhone passcode.
Numbered Step-by-Step Restoration Guide
Follow this procedure to restore your iPhone using a Mac or a Windows PC:
- Prepare Your Tools: Ensure you are using an official or MFi-certified USB cable. If you are on Windows, download the latest version of iTunes. On macOS Catalina or newer, the restore process is handled natively by the Finder application.
- Establish the Connection: Plug your iPhone into the computer. Unlock the iPhone and tap Trust This Computer if prompted, then enter your passcode.
- Locate Your Device: Open Finder and select your iPhone under Locations in the sidebar, or click the device icon in the top-left corner of iTunes.
- Disable Find My iPhone: Go to Settings > [Your Name] > Find My > Find My iPhone, toggle it off, and enter your Apple ID password.
- Back Up Your Data: Click Back Up Now under the Summary tab to save your photos, app data, and settings locally to your computer.
- Initiate the Restore: Click Restore iPhone in the General or Summary panel.
- Confirm and Download: Click Restore again in the pop-up window to confirm. Your computer will download the correct firmware package and begin flashing it. Do not disconnect the cable during this process.
If your device gets stuck during the restore, you may need to force it into a deeper restore state. For steps on entering this state, see our walkthrough on How to Put Your iPhone in DFU Mode.
Frequently Asked Questions (FAQ)
What is the difference between iTunes Restore and Finder Restore?
There is no difference in the actual firmware written. Apple split iTunes in macOS Catalina, moving device management features into Finder. Windows users must still download iTunes.
Why is my computer returning Error 4013 during restore?
Error 4013 indicates a hardware disconnect or a faulty USB cable. To resolve this, try using a different cable, plug into a different USB port directly on the computer, or clean dust out of the iPhone connector.
Can I restore my iPhone without a computer?
You can reset your iPhone to factory settings on the device itself by going to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings. However, if the OS is corrupted or you are locked out, you must use a computer. For official computer restore steps, visit the Apple Support computer restore portal. For help bypassing software restoration loops using manual hardware diagnostics, refer to iFixit's iPhone Restoration Wiki.