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Software Modification Issues High Severity
The Required Resource Can't Be Found
This error occurs when the required firmware file or resource cannot be found, often due to jailbreaking or attempting to downgrade iOS.
Before You Begin
- • On Mac with macOS Catalina 10.15 or later: Ensure your Mac is up to date
- • On Mac with macOS Mojave 10.14 or earlier: Ensure you have the latest version of iTunes
- • On PC: Ensure you have the latest version of iTunes or the Apple Devices app
Common Causes
- 1 Device has been jailbroken
- 2 Attempting to downgrade iOS
- 3 Corrupted firmware files
- 4 Modified system files on device
How to Fix Error resource-not-found
1
Use Recovery Mode
Put your device in recovery mode to restore to the latest iOS version.
2
Download Fresh IPSW
Download a fresh copy of the IPSW file from a trusted source.
3
Use DFU Mode
If recovery mode doesn't work, try Device Firmware Update (DFU) mode for a deeper restore.
4
Accept Data Loss
Note that this restore will erase all data on your device. Restore from backup after the process.
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Still Need Help?
If you've tried all the steps above and still can't resolve the issue, you may need to contact Apple Support or visit an Apple Store. You can also compare your case against Apple's official iOS update and restore errors page.