Choose . Select Ports (COM & LPT) and click Next .

Right-click the "Unknown Device" or "SPRD U2S Diag" under in Windows Device Manager. Select Update Driver > Browse my computer for drivers .

The (often referred to as U25) is a critical software component required for your Windows PC to communicate with devices powered by Spreadtrum/UNISOC chipsets . This driver is essential for diagnostic functions, firmware flashing (using tools like the SPD Upgrade Tool), and IMEI repair. 1. Identify Your Hardware IDs

The first step to making the driver work is confirming your device is recognized by Windows. These devices typically use the vendor ID VID_1782 . : USB\VID_1782&PID_4D00 . Alternate Port : USB\VID_1782&PID_3D10&MI_01 . 2. Manual Installation on Windows 10 & 11

Modern Windows versions often block these drivers because they lack updated digital signatures. Use these steps to bypass common "not working" errors: