Once the PC restarts, select > Advanced options > Startup Settings > Restart .
If you see this but the device doesn't work, right-click the device in Device Manager, choose > Browse my computer > Let me pick from a list > Have Disk , and manually select the .inf file from the extracted folder.
Are you trying to connect a Spreadtrum (SPD) or UNISOC-powered smartphone to your PC for flashing, firmware updates, or device diagnostics, only to have Windows display "SPRD U2S Diag" with a yellow exclamation mark?
Windows 10 often blocks these drivers because they may lack a standard digital signature or require specific boot permissions. Follow these steps for a successful installation: Disable Driver Signature Enforcement: while clicking to enter the Windows Recovery Environment. Navigate to Troubleshoot Advanced options Startup Settings to "Disable driver signature enforcement". Manual Installation via Device Manager: Device Manager , click on "Action," and select Add legacy hardware if the device isn't automatically detected. Sprd U2s Diag Driver For Windows 10 64 Bit
Disclaimer: Installing drivers and using flashing tools can be risky. Ensure you have backups of your data and understand the risks involved. If you have specific issues, I can help you find: if the current one doesn't work. Specific installation steps for your phone model. Tools that use this driver (like SC_Factory_Tool). Let me know what you'd like to explore next . Share public link
The SPRD U2S Diag Driver for Windows 10 64-bit is primarily used in scenarios where detailed diagnostics and repair of mobile devices or their components are required. This includes:
Preloader mode often only stays active for a few seconds. If the device switches to battery charging, disconnect and try again while initiating your flashing tool first. Once the PC restarts, select > Advanced options
Spreadtrum chipsets utilize an aggressive energy-conservation loop during the boot cycle. When a device is linked to a computer via USB while powered off, it exposes the diagnostic interface for a maximum window of before dropping back to battery charging mode.
Upon reboot, press or F7 to select "Disable driver signature enforcement". Step 2: Extract the Driver Files Download a verified Spreadtrum USB Driver package.
For driver packages that come only as INF files without an installer, follow these steps: Windows 10 often blocks these drivers because they
DriverPack.io and Driver Scape provide automated installers for generic Spreadtrum port devices. Installation Guide
The Spreadtrum U2S Diag driver is part of a software package designed for smartphones and feature phones. Unlike standard MTP or ADB drivers, the Diag driver opens a specific COM port (typically labeled as SPRD U2S Diag ) used for advanced operations: