If the installer fails on Windows 11, you may need to "Disable Driver Signature Enforcement" via the Advanced Startup menu before installing.
Open the folder and run the DPInst64.exe (for 64-bit Windows) or DPInst32.exe (for 32-bit Windows).
If your flashing tool is stuck, it usually means the driver is installed but the device is not in the correct "Boot Mode." Conclusion
Try a different USB cable or a USB 2.0 port. USB 3.0 (blue ports) can sometimes cause handshake issues with SPD drivers.
To ensure your PC recognizes your phone in or VCOM Mode , follow these steps: Step 1: Preparation Unplug your mobile device from the PC.
Fixes the common "Driver Signature Enforcement" block on Windows 10/11.
The SPD (Spreadtrum) Driver is a software package that allows your Windows OS to communicate with mobile devices running on Unisoc/Spreadtrum chipsets. Version is a critical update that improves compatibility with: Windows 10 and 11 (64-bit and 32-bit) SPD Upgrade Tool / Research Download Tool Latest Unisoc SC9863A, Tiger T610, and T618 chipsets Key Features of the 20.0114 Update