Specifically, a lack of specialized virtual serial port drivers often required by crack versions.
Some PC motherboards (particularly budget laptops) have high USB polling latency. Miracle Box requires real-time communication. If the latency exceeds a threshold, the software throws the unstable comport error. miracle box unstable comport
If the issue persists after these steps, the problem may be hardware-related (damaged UFS chip on the phone or a damaged USB controller on your PC motherboard). Try a different PC to isolate the issue. Specifically, a lack of specialized virtual serial port