To use version 5.5.1, you typically need the or Smart Card connected to your PC. The software acts as the interface for this hardware, providing a secure environment for data transfer between the computer and the mobile device. If you'd like to dive deeper, I can help you with:
Capable of bypassing FRP (Factory Reset Protection) , unlocking bootloaders, and removing screen locks (Pattern, PIN, Password). ultimate multi tool v5.5.1