SC6531E_USB_Driver_Full/ ├── sprd_usb_serial.inf ├── sprd_usb_serial.cat ├── sprd_usb_serial.sys ├── sprd_adb.inf ├── sprd_adb.sys ├── sprd_cdc.inf ├── WdfCoInstaller01009.dll ├── WinUSBCoInstaller2.dll └── dpinst_x64.exe (for 64-bit systems)
Windows driver signature enforcement blocking the Spreadtrum driver. sc6531e usb driver full
: Another application (like Modem Monitor or HyperTerminal) is holding the port. Solution : Close all COM port monitoring tools. In Device Manager, go to Port properties → Advanced → Change COM port number to COM1-COM4 (low numbers work best). SC6531E_USB_Driver_Full/ ├── sprd_usb_serial