GSM Tool Pro v5.2 is a Windows-based utility designed for mobile servicing, specifically targeting devices, though later iterations claim support for brands like Xiaomi and Oppo. The "free version" is often circulated as a cracked or "dongle-free" setup that bypasses the need for a physical security key. Key Features
GSM Tool Pro V5.2 Free Version: Complete Review, Features, and Setup Guide
For true free users: Download (open source) and SP Flash Tool (official). Neither is as polished as GSM Tool Pro, but they are 100% safe, malware-free, and actually work for FRP and flashing on MediaTek devices.