A Mac computer running macOS High Sierra up to macOS Catalina. AppleTech752 Sliver 6.2 Tool or similar A5 RAMdisk tool. Synackuk’s repository. Step 1: Flash the Arduino Board Open the Arduino IDE on your computer. Load the checkm8-a5 source code sketch into the IDE. Select your designated port via Tools > Port . Click Upload to flash the exploit code onto the Arduino. Step 2: Enter DFU Mode and Apply Exploit

Complete Guide: iPhone 4s Activation Lock Bypass iOS 9.3.5 / 9.3.6

Stop when you reach the "Activate iPhone" screen that asks for your Apple ID and password.

Look for updated A5 bypass tools (often found on specialized forums like nifble or through trusted jailbreak developers). 3. Using Tools Like iRemove (If Supported)

If you have proof of purchase, Apple can remove the lock for you. Apple Support

The key to unlocking the iPhone 4s lies deep within its hardware—the Apple A5 system-on-chip (SoC). Unlike modern iPhones that pack advanced security chips (like the Secure Enclave Processor), the iPhone 4s and its contemporaries (iPad 2, iPad 3, iPod touch 5G) contain a critical hardware vulnerability known as .

Most activation locks were ironclad. But iOS 9.3.5 on a 32-bit device like the 4S was a strange, specific cracks in the armor. The security protocols were old, predating the modern, server-side dominance of Apple's current ecosystem. There was an exploit—a glitch—buried deep in the setup wizard that only existed on this specific firmware.

The iPhone 4s remains a beloved device for many, and its compatibility with iOS 9.3.5 makes it a viable option for those looking for a budget-friendly iPhone. While activation lock presents a challenge, the exclusive method outlined in this article provides a solution for bypassing this security feature.