What is an IPSW File?
IPSW stands for "iPhone Software," and it's Apple's firmware file format used to install or restore iOS on iPhone and iPad devices. Think of an IPSW file as a complete, standalone package containing everything needed to run iOS on your device—the operating system, system apps, drivers, and all essential software components.
Unlike over-the-air (OTA) updates that download through Settings and install incrementally on top of your existing iOS installation, IPSW files provide a complete, clean installation. This makes them ideal for troubleshooting persistent issues, performing factory resets while updating to a new iOS version, or bypassing OTA restrictions.
IPSW files are actually ZIP archives containing a file system image, bootloader files, kernel cache, and device-specific firmware. Each IPSW is built for specific device models and cannot be used interchangeably. For example, an iPhone 16 Pro IPSW won't work on an iPhone 15 Pro.
These files typically range from 5GB to 8GB in size, depending on the device model and iOS version. Because of their size, downloading IPSW files requires a stable internet connection and sufficient storage space on your computer.
Why Install iOS Using IPSW?
While the standard OTA update method works well for most users, IPSW installation offers several advantages for advanced users and specific scenarios:
- Clean Installation: IPSW provides a fresh start by completely replacing your existing iOS installation, eliminating accumulated system clutter, corrupted files, or problematic configurations.
- Troubleshooting Tool: When your iPhone won't boot properly, is stuck in recovery mode, or experiences persistent issues that OTA updates can't fix, IPSW installation can restore functionality.
- Faster Installation: If you have a fast internet connection and USB 3.0 or higher, IPSW installation can be quicker than downloading large updates over Wi-Fi directly to your device.
- No Profile Required: You can install Developer Beta IPSW files without being enrolled in the Apple Developer Program (though you'll need to find the file from trusted sources).
- Offline Installation: Once downloaded, IPSW files can be installed without an active internet connection.
- Multiple Devices: Download once and install on multiple compatible devices without re-downloading.
IPSW installation is more technical, requires a computer, erases all data unless you restore from backup, and carries more risk if something goes wrong. Always backup your device before proceeding.
Download iOS IPSW Files
iOS 26 and earlier versions available now. iOS 27 coming June 2026.
Browse Available DownloadsPre-Installation Requirements
Before downloading or installing any iOS IPSW file, ensure you meet these requirements:
Compatible Device
Verify your iPhone or iPad supports the iOS version you want to install. Installing incompatible firmware can cause issues. Check our supported devices page for compatibility information.
Computer with iTunes or Finder
You'll need a Mac or Windows PC:
- macOS Catalina+: Use Finder
- macOS Mojave or earlier: Use iTunes
- Windows: Use iTunes for Windows
Complete Backup
IPSW installation will erase all data. Create a complete backup using iCloud or your computer before proceeding. This is non-negotiable. See our backup guide for help.
Sufficient Storage
Your computer needs 10-15GB of free space: 5-8GB for the IPSW file, plus temporary extraction space during installation.
Original Apple Cable
Use an authentic Apple Lightning or USB-C cable. Third-party cables can cause connection issues or installation failures.
Disable Find My iPhone
Go to Settings → [Your Name] → Find My → Find My iPhone and toggle it off. Installation will fail if Find My is enabled.
Where to Download IPSW Files
Finding legitimate IPSW files is crucial for device security and successful installation. Only download from these trusted sources:
Official Sources
- Apple Developer Portal: If you have an Apple Developer account ($99/year), download official IPSW files directly from developer.apple.com. These are signed by Apple and completely safe.
- Our IPSW Download Page: We provide links to official IPSW files for iOS 26 and earlier. Visit IPSW Beta Downloads for available files.
Trusted Third-Party Sources
- IPSW.me: Reliable database of Apple firmware files, including beta versions. Cross-references checksums with Apple's servers.
- TheAppleWiki: Community-maintained database with detailed firmware information.
Only download IPSW files from trusted sources. Modified or corrupted files can brick your device, compromise security, or contain malware. Never download from unknown websites or file-sharing platforms.
Step-by-Step Installation Guide
Once you've downloaded the correct IPSW file and completed all pre-installation requirements, follow these steps:
Connect Your Device
Use an original Apple cable to connect your iPhone to your Mac or Windows PC. Open Finder (macOS Catalina+) or iTunes. Your device should appear in the sidebar or device list.
Select Your Device
Click on your iPhone in Finder's sidebar or iTunes. You'll see the device summary screen with your iPhone's information.
Enter Recovery Mode (Optional)
For clean installations or troubleshooting, enter Recovery Mode:
- iPhone 8+: Press Volume Up, then Volume Down, then hold Side button until recovery screen appears
- iPhone 7: Hold Volume Down + Side button together
Select the IPSW File
On Mac: Hold Option key and click "Restore iPhone"
On Windows: Hold Shift key and click "Restore iPhone"
Navigate to your downloaded IPSW file and select it.
Wait for Installation
Installation takes 15-30 minutes. Your iPhone will restart multiple times. Do not disconnect the cable or interrupt the process. When complete, your iPhone will boot to the setup screen.
IPSW vs OTA Installation
Understanding the differences helps you choose the right approach:
| Feature | IPSW | OTA |
|---|---|---|
| Installation Method | Computer required | iPhone only |
| Data Preservation | Erases (unless "Update") | Preserves data |
| Installation Type | Clean/Full install | Incremental update |
| File Size | 5-8 GB (full) | 1-3 GB (delta) |
| Technical Level | Advanced | Beginner-friendly |
| Troubleshooting Power | ||
| Offline Installation | ||
| Recovery Mode Fix |
Troubleshooting Common Errors
IPSW installation doesn't always go smoothly. Here are solutions to the most common errors:
Firmware Not Compatible
IPSW doesn't match your device model or Apple stopped signing that version.
Solution: Verify the correct IPSW for your device model (Settings → General → About → Model Number). Check if Apple still signs it at ipsw.me.
Stuck in Recovery Mode
iPhone shows iTunes/Computer icon and won't boot normally.
Solution: Try installing again—often succeeds on second attempt. If that fails, force restart your device. See our detailed guide.
Error 3194 or 4000
Communication errors with Apple's verification servers.
Solution: Update iTunes/Finder. Disable antivirus/firewall temporarily. Try different USB port. Check hosts file isn't blocking Apple.
Find My Must Be Disabled
Installation fails because Find My iPhone is enabled.
Solution: Boot into Recovery Mode and restore (erases data) or boot normally first to disable Find My in Settings.
IPSW File Is Corrupt
File didn't download completely or became corrupted.
Solution: Delete and re-download from trusted source. Verify file size (should be 5-8GB). Use a download manager.
Device Not Recognized
iTunes/Finder doesn't detect your iPhone when connected.
Solution: Use original Apple cable. Try different USB ports. Update/reinstall iTunes. Check Device Manager (Windows) for drivers.
Frequently Asked Questions
Related Resources
Ready to Download IPSW Files?
iOS 26 and earlier available now. iOS 27 coming June 8, 2026.
Browse All IPSW Downloads