trick your phone into thinking Apple said yes. They are unique to your iPhone 4s’s ECID (a hardware ID). If you never saved them via Cydia or TinyUmbrella in 2012, you cannot install iOS 5 permanently (untethered).
running iOS 9.3.6 (the final version) or an untethered downgrade to iOS 6.1.3/8.4.1. Minimum Storage downgrade iphone 4s to ios 5
downgrade-iphone-4s-ios-5
Downgrading an iPhone 4S to iOS 5 restores the device's original peak performance trick your phone into thinking Apple said yes
Drag the ios.sh file into the terminal window and press Enter. 2. Connect in DFU Mode Plug your iPhone 4s into your computer. downgrade iphone 4s to ios 5
. The laggy typing and stuttering animations that plague the 4S on its final firmware (iOS 9.3.6) completely disappear System Fluidity