Try a different USB port or restart the application.
These tools are often flagged as "False Positives" by antivirus software because they interact with hardware at a low level. It is usually necessary to temporarily disable protection. USB 2.0 vs 3.0: For the most stable results during flashing, use a USB 2.0 port firstchip fc1178 fc1179 mptools v1052
If your 64GB drive becomes a 32GB drive after repair, the tool has masked "bad blocks" to ensure the drive remains usable and stable. Conclusion Try a different USB port or restart the application