running iOS 9.3.5 is difficult because it involves hardware-level security that remains even after a factory reset. Official Removal (Recommended)
to your computer [youtube.com]. Open the Sliver application, navigate to the A5 bypass options, and choose the option to load a custom Ramdisk [reddit.com, youtube.com]. Once the ramdisk executes successfully, select the command to delete Setup.app [reddit.com].
A computer running macOS or Linux (Windows compatibility is highly limited for this specific exploit). A standard 30-pin Apple charging cable. Overview of the Technical Process:
Apple will permanently remove the Activation Lock for free if you can prove ownership. You can submit an online request via Apple’s official support portal.