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Nicoleep's avatar
Nicoleep
Copper Contributor
Apr 29, 2026

How can I revert iphone to previous ios 18?

Hi all, My iPhone was upgraded to iOS 26 from iOS 18 one week ago but it causes a lot of issues since then. After updating, the phone is not working as well as before, so I would like to know whethe...
AoEvans's avatar
AoEvans
Copper Contributor
Apr 29, 2026

If you are technically inclined or simply want a powerful solution to revert my iPhone to older iOS 18, idevicerestore is the most best option available. It is a command-line tool that reimplements Apple's restore process from scratch.

What it is: A cross-platform application (Windows, Mac, Linux) that allows fine-grained control over iOS firmware restoration without relying on Apple's proprietary software.

Key Features: It allows for custom firmware flashing, manual SHSH blob management, and selective component upgrades (like skipping the baseband update).

How to use it: This requires using the command line. You would typically run a command like idevicerestore -d [path to IPSW file] to initiate the process. (Note: This is for advanced users comfortable with terminal commands).

Overall, using iDeviceRestore to revert my iPhone to older iOS 18 can be a useful method for those who need to go back to a previous iOS version, but it requires careful preparation and awareness of Apple’s signing policies.