200131 Upd - Spd Driver

If the driver fails to install on Windows 10 or 11, you may need to disable Driver Signature Enforcement.

Select the .inf configuration file (typically sprd_usb_serial.inf ), click , select OK , and then follow the terminal prompts to complete the process. Supported Spreadtrum / UNISOC Chipsets spd driver 200131 upd

Run the installer as an Administrator. Click 'Next', accept the license agreements, and proceed. If the driver fails to install on Windows

If a red Windows Security prompt appears warning that the publisher cannot be verified, click accept the license agreements

Navigate to > Advanced options > Startup Settings and click Restart .