Install the Cydia tweak which forces the App Store to serve the last compatible version of an app for your OS.

Because this is a tethered downgrade, your phone will not boot on its own if it turns off. Open Legacy iOS Kit again. Select > "Just Boot" .

Use tools like Phoenix to jailbreak your iOS 9.3.5/9.3.6 firmware.

Apple's activation servers occasionally struggle with older iOS versions. You may need to bypass activation or use specific jailbreak tools if the phone fails to activate normally over Wi-Fi. Understanding the Methodology

Download and unzip the Legacy iOS Kit to your desktop.

Enjoy the original Game Center, Maps, and the lack of a Control Center.

Once finished, the phone will reboot into the classic iOS 5 setup screen. 🚀 Why Downgrade to iOS 5?

This article will guide you through the process of downgrading an iPhone 4S (iPhone 4,1) to iOS 5.1.1, the most stable version for that era. ⚠️ Crucial Pre-requisites & Limitations

: You regain the classic "linen" notification center and glass-textured icons that defined the Steve Jobs era, providing a nostalgic aesthetic no longer present in modern flat designs. The Modern Reality: Practical Limitations App Compatibility