Windows has a feature designed to save power by turning off devices it deems "inactive." Sometimes, Windows will cut power to the USB Root Hub to save battery life. When Miracle Box tries to communicate, the port wakes up, causing a micro-disconnect that triggers the instability warning.
However, even the best hardware can run into software conflicts. One of the most frustrating and common errors users face is the message. This error usually appears when you try to flash a device or connect the box to your PC, causing the operation to fail midway. miracle box unstable comport
Here’s a detailed review of the issue “Miracle Box unstable COM port” — a common problem faced by users of the Miracle Box (a hardware dongle for flashing, repairing, and unlocking mobile phones, especially MediaTek and SPD devices). Windows has a feature designed to save power
Power off the phone, remove the battery, and re-insert it before connecting. One of the most frustrating and common errors