: These are unofficial, modified versions of the software. They often contain malware or viruses and are generally not recommended for use on your primary computer.
If you are looking for the tool built into Windows to scan for malware, you do need a .rar file or a dongle. MRT KEY MRT Dongle Mobile Repair Tools - deviceparts Download MRT Without Dongle rar
The MRT-Dongle is a professional hardware-based tool used for flashing and unlocking Android devices, specifically Meizu, Xiaomi, VIVO, and Huawei. : These are unofficial, modified versions of the software