The "Device Not Registered" or "Exclusive" error in typically occurs when the tool cannot verify your device's Unique Device Identifier (ECID) in the developer's database. This software requires a formal registration—often a paid service—to authorize its bypass features for specific iOS devices. Primary Causes of the Error
If using a Mac, ensure brew and libusb are healthy. Run brew doctor in the Terminal to check for errors. If issues persist, reinstall the USB driver by running: brew uninstall libusb brew install libusb : lpro aio ramdisk device not registered exclusive