If you want to tailor this process to your specific computer setup, let me know:
Release the Power button but keep holding the Home button for another 10 seconds until your computer recognizes a device in recovery/DFU mode. The screen should remain completely black. Step 4: Run the Downgrade Script
Open your terminal or command prompt window and navigate to the extracted folder. downgrade iphone 4s to ios 5
Run the initial script script to install dependencies: ./restore.sh Step 4: Execute the Downgrade
To bypass this on the iPhone 4s, the jailbreak and legacy developer communities created custom command-line tools. These tools exploit specific hardware vulnerabilities or utilize OTA (Over-The-Air) signing loopholes. For the iPhone 4s, the community standard involves dual-booting or using command-line scripts like , Futurerestore , or specialized legacy restore GUI bundles (such as iOS-OTA-Downgrader ). Step-by-Step Guide using iOS-OTA-Downgrader If you want to tailor this process to
Make sure you are using an authentic Apple 30-pin cable and a USB 2.0 port if possible. Modern USB 3.0/USB-C ports sometimes have trouble communicating with older Apple devices in DFU mode.
You get to experience the classic, skeuomorphic design of early iOS, including the linen notification center, glossy icons, and the iconic "Slide to Unlock" sound. Important Prerequisites and Risks Run the initial script script to install dependencies:
Navigate to /System/Library/CoreServices and locate the SystemVersion.plist file.
Most modern apps (WhatsApp, Instagram, YouTube) will not work.
Every time you reboot your phone, it will start in iOS 9. You must open the CoolBooter app to launch your fast, clean iOS 5 environment. Post-Downgrade Tips: Making iOS 5 Usable