For a true hardware-level "hacktivation" that completely opens up the iOS 9.3.5 file system, you must bypass the SecureROM. Unlike newer iPhones, the A5 processor found inside the iPhone 4s requires an external hardware interface to trigger the exploit. Required Tools: An micro-controller board. A USB Host Shield attached to the Arduino. A legacy Apple 30-pin to USB-A cable .
You will be brought to a custom screen (like this YouTube tutorial shows) that allows you to use basic features like YouTube, camera, and maps.
Scroll down to the section and delete the existing numbers. iphone 4s activation lock bypass ios 9.3.5
Limitation: This method is partial. You might not have full cellular service or access to the App Store. Method 3: Official Apple Support (The Best Way)
The only permanent and safe way to remove the lock is through official channels: A USB Host Shield attached to the Arduino
If you want to try the hardware route, I can explain or how to set up the Arduino environment . Let me know how you would like to proceed. Share public link
Place the iPhone 4S into DFU mode (black screen) and connect it directly to the USB Host Shield attached to the Arduino. Scroll down to the section and delete the existing numbers
Zero cost, no computer needed. Cons: Does not fully unlock cellular or iMessage. A full restart often requires redoing the process. This is a “partial bypass.”