Before installing, verify your system:
enables communication between your PC and Spreadtrum devices, allowing tools like ResearchDownload or UpgradeDownload to detect your phone. Sprd U2s Diag Driver For Windows 10 64 Bit
As of 2025, Unisoc (formerly Spreadtrum) has improved its driver signing. Newer chips (Unisoc Tiger T606, T618, etc.) use class drivers that are WHQL-signed. If you have a newer device, look for "Unisoc USB Diag Port" rather than "SPRD U2S." The legacy SPRD U2S name is still used for older chips like SC7731, SC9832, SC9850, and SC9863. Sprd U2s Diag Driver For Windows 10 64 Bit
Navigate to > Advanced options > Startup Settings > Restart . Sprd U2s Diag Driver For Windows 10 64 Bit