Click and browse to the extracted driver folder.
Upon reboot, press or F7 to select Disable driver signature enforcement . Step 2: Use the DPInst Executable (Recommended Method)
If the executable file fails or your phone shows up with a yellow exclamation mark ( SCI USB Serial ), use this manual method: spd driver 20 0114 update link
Click and allow Windows to finalize the local installation. Supported Connection Modes
Master Guide: SPD Driver 20.0114 Update Link and Installation Click and browse to the extracted driver folder
If your operating system actively blocks the installation on Windows 11, you may need to temporarily pause signature enforcement protocols.
Open the Windows Start menu, search for , and open it. Supported Connection Modes Master Guide: SPD Driver 20
Uninstall any previous versions of Spreadtrum drivers to avoid hardware conflicts. Step 2: Installation
This error typically appears in the or Research Download Tool when attempting to flash firmware, root, or unlock devices powered by Spectrum chips (such as Lava, ZTE, Micromax, or various feature phones).