Su2serial Port Driver Miracle Box Site

Sometimes, Windows assigns a high COM port number (like COM17). Older Miracle Box software versions cannot detect ports above COM9.

[PC] <--USB--> [Miracle Box Dongle] <--UART/JTAG/GPIO--> [Target Phone]

Old Prolific or FTDI drivers cause conflict.

There isn't a single file named "SU2 Driver.exe." Instead, "SU2" is the mode, and you need the underlying drivers to support it. Here is the step-by-step solution. su2serial port driver miracle box

| Problem | Solution | | :--- | :--- | | Driver installs, but still yellow mark | Right-click the driver in Device Manager > Uninstall device (check "Delete driver software"). Repeat Step 3 (disable signature enforcement) and reinstall. | | COM port changes every time | You can manually change it: Right-click SU2Serial > Properties > Port Settings > Advanced > COM Port Number – pick a low, unused port like COM3. | | Miracle Box software doesn't see the port | Run Miracle Box software as Administrator. Also, close other programs using COM ports (like terminal apps). | | "Driver is intended for x64" error | You are on 32-bit Windows. Find a 32-bit version of the SU2Serial driver (rare). Consider reinstalling 64-bit Windows. | | Still "Unknown Device" after all steps | Your USB cable may be faulty, or the Miracle Box hardware might be damaged. Try a different USB port (USB 2.0 works best, not USB 3.0). |

The SU2Serial driver reserves specific PID/VID combinations. If you have other serial drivers (e.g., for Arduino, USB-to-TTL converters), they may conflict. The solution is to assign different COM port numbers via Device Manager → Ports → SU2Serial → Port Settings → Advanced. Sometimes, Windows assigns a high COM port number

Open Device Manager (Right-click Start button > Device Manager).

Look under:

If the device shows as "MIRACLE BOX" but works fine, you do not need this guide.