To fix the problem permanently, you must diagnose the source. Here are the top 7 reasons why Miracle Box reports an unstable comport.
: A loose USB cable, a dusty charging port on the phone, or a faulty USB port on your PC can cause the connection to "flicker." Power Supply miracle box unstable comport
If the phone's battery is below 50%, or if the USB cable is of poor quality, the device may drop the connection during the intense power draw of the "Booting" phase. To fix the problem permanently, you must diagnose the source