If you opt for a tethered downgrade, you cannot let the battery run out. If the phone shuts down while you are away from your computer, it will get stuck in a recovery loop until plugged back into your terminal environment. Final Thoughts
No tool can perform an untethered downgrade from iOS 10/11/12 to iOS 7 because SEP firmware cannot be downgraded.
Downgrading is a delicate and potentially risky process. Make sure you have the following:
Before you commit to the "Time Machine" experience, consider the functional downsides: Downgrade Iphone 5s To Ios 7
A safer alternative to a full downgrade is dual-booting, which keeps your current iOS (likely iOS 12.5.8) as the primary system while running iOS 7 as a secondary partition. Preparation must be jailbroken on its current firmware (e.g., using Installation CoolBooter
The 5s originally shipped with iOS 7.0. When Apple released iOS 7.1, they issued a "delta" OTA update. The signing keys for that specific delta update were left active. This tool tricks the iPhone into thinking it is receiving an official OTA update to iOS 7.1.2, even though Apple no longer signs the full IPSW.
Downgrading an iPhone 5s to iOS 7 is the digital equivalent of restoring a vintage Porsche 911 to its original carbureted engine. It is difficult, slightly illogical, and absolutely wonderful. If you opt for a tethered downgrade, you
The 5s does not have a BootROM exploit (like the iPhone 4's Limera1n). The first BootROM exploit for 64-bit devices didn't arrive until the checkm8 exploit in 2019, which works for the iPhone 5s—but only if you have a Mac or Linux computer, and even then, it requires tethered booting.
Virtually no modern apps from the App Store will download or work on iOS 7. The software architecture is too old. It is essentially a "dumb phone" meant for calling, texting, local music, and stock apps.
If you are looking to downgrade your iPhone 5s to iOS 7 to recapture that out-of-the-box experience, there is good news and bad news. The process is possible, but it is far more complex than a standard software update, and it comes with significant caveats. Downgrading is a delicate and potentially risky process
A tethered downgrade means the phone will boot and run iOS 7 perfectly, but to boot it up using a script. This method relies on the checkm8 bootrom exploit, which is a hardware vulnerability that Apple cannot patch with software updates. Prerequisites & Requirements
Install dependencies using the command: brew install openssl libimobiledevice libzip pkg-config lsusb Step 2: Download the Downgrade Tool
Statistically irrelevant. If you have to ask how, you don't have the blobs.
Apple only allows downgrades if they "sign" the older firmware. Apple does not sign iOS 7 for the iPhone 5s anymore.