-COM 22- indicates that the device has been assigned COM Port 22 by Windows. This could be any number (COM3, COM7, COM22, etc.), but it signifies a working (or attempting to work) serial connection.
The Bottom Line: This driver is not for everyday use. It is a specialized engineering driver for repairing, flashing, or diagnosing Spreadtrum-based Android devices.
| Issue | Solution | |--------|----------| | Driver installs but still has yellow mark | Try a different USB port (USB 2.0 recommended). Install driver in “disable driver signature enforcement” mode. | | COM port number keeps changing | That’s normal. The phone reassigns COM each time you reconnect. | | Device shows as “Unrecognized” | The phone isn’t in diagnostic/download mode. Use proper key combo (e.g., Vol+ while connecting USB). |
DIAG refers to Diagnostic Mode. This is a special engineering mode on Spreadtrum devices that allows low-level communication with the phone’s processor. It enables tools like: sprd u2s diag -com 22- drivers download
The correct driver package is usually called Spreadtrum/Unisoc USB Driver or SPRD Android Debug/USB Diag Driver.
Download Sources:
Direct download keywords for search (use Google): -COM 22- indicates that the device has been
"Spreadtrum USB Driver" zipor"Unisoc Android Diag driver"
If you already have the driver folder, the correct hardware ID for “SPRD U2S Diag” is usually:
USB\VID_1782&PID_0013&REV_0222
You can check this in Device Manager → Device Properties → Details → Hardware Ids. | Issue | Solution | |--------|----------| | Driver
Use that to verify you have the correct .inf file (often named spd_u2s.inf).
SPRD stands for Spreadtrum Communications. In 2014, Spreadtrum merged with RDA Microelectronics, and the combined entity was later rebranded as Unisoc. If you see "SPRD," it means the device is powered by a Unisoc/Spreadtrum chipset (e.g., SC7731, SC9832, SC9863, Tiger T610, etc.).
U2S stands for USB to Serial. This indicates that the device is presenting itself as a virtual COM port (serial port) over a USB connection. This is common for diagnostics, firmware flashing, and IMEI repair tools.
