Connect your device in its flashing state (e.g., holding Volume keys while plugging in the cable).
To help narrow down the specific cause of your connectivity issues, please share a few more details: unstable usb port miracle box 282 solution
If using a desktop PC, always use the rear motherboard ports instead of front-panel chassis ports. Eliminate USB Hubs Connect the Miracle Box or dongle directly to the computer. Connect your device in its flashing state (e
If your PC displays "Waiting for USB Port" or "none usbport," the issue is likely a corrupted MTK, SPD, or Qualcomm driver. or Qualcomm driver.