You will see a "BSD Log" (scrolling text) on your iPhone screen. This is normal. Do not unplug the cable until the phone reboots to the home screen. Risks and Modern Alternatives
A custom firmware project for older devices that mimics newer iOS versions while pre-jailbreaking the device safely. How to Safely Tinker with Classic iPhones Ziphone Download
: Do not use unverified soft-download directories, forum links with broken URLs, or sites prompting executable downloads wrapped in browser extensions. You will see a "BSD Log" (scrolling text)