Downgrading an Go to product viewer dialog for this item. to iOS 7 is possible but has major trade-offs. Because Apple no longer "signs" iOS 7, you cannot use iTunes for a standard restore. Instead, you must use a tethered downgrade, meaning you will need a computer to boot the phone every time it restarts. Prerequisites & Warnings How I Downgraded a iOS 7 iPhone 5 to iOS 6

• The interface was still beautiful and easy to use.
• Performance was excellent, with minimal lag.
• Battery life seemed to have improved.

3. Hardware Limitations: A7 Chip & SEP

The iPhone 5s uses the Apple A7 chip with a Secure Enclave Processor (SEP) introduced in iOS 8. iOS 7 has no SEP support.

Disclaimer: This will erase all data on your phone. Back up your photos to iCloud or a PC first.

The Method: A High-Level Overview

Warning: This process carries a risk of "bricking" your device. Proceed at your own risk.