Advanced users sometimes use an Arduino Uno with a USB Host Shield to put the A5 chip into "pwned DFU" mode. This allows for a more "untethered" bypass, though it requires external hardware and technical knowledge of Arduino IDE. If your Apple Account is locked, not active, or disabled

The iPhone 4s remains a popular legacy device, but running its final official software, iOS 9.3.5, often leads to the dreaded screen. This security feature, designed to prevent unauthorized use, can be a major hurdle if you've forgotten your Apple ID or purchased a used device.

Remove the existing DNS and enter one of the following based on your location: 104.154.51.7 Europe: 104.155.28.90 Asia: 104.155.220.58 South America/Other: 78.109.17.60 Tap Back , then Done , and select Activation Help .