No. In fact, Otz Flasher is often used to unroot or restore a non-rooted stock ROM. However, unlocking the bootloader (required for many operations) is separate from rooting.
The official setup process is straightforward for a licensed user. After installing the software from the official FuriousGold area, you simply connect the hardware dongle to a USB port on your Windows PC. Once the drivers are installed, the OTZ Flasher module becomes fully functional. Otz Flasher Pack 6 Free Download
This tool is not standalone "free" software; it requires a physical hardware interface to function: No. In fact