: A full system restart is typically required for the PC to properly recognize the connected Spreadtrum device.
Note: Always scan downloaded files with a verified antivirus program before execution. Step-by-Step Installation Guide
: Hosts newer versions (e.g., v4.20.42.134) under the UNISOC vendor name. Installation Guide
: On Windows 10 or 11, you must restart your PC in Advanced Startup mode and select option 7 ("Disable driver signature enforcement") to allow the installation.
Once installed, expand the tree in the Device Manager. You should see a listing such as SPRD U2S Diag (COM22) .
If you are using a specific brand like Lenovo, ensure you are using the designated UNISOC/Lenovo driver package.
Installing these drivers manually is the most reliable way to ensure your device is properly mapped to your desired COM port. Step 1: Download the Driver Package
Connect your phone to the PC in Diagnostic mode (often activated via a code in the dialer, or just plugging in via USB while in a specific diagnostic state). Open (Right-click Start -> Device Manager).
The number following "COM" represents the logical port your computer uses to identify the device. While Windows automatically assigns any available COM port when a device is plugged in, certain legacy flashing tools, factory software, or device repair scripts are sometimes hardcoded to detect or use specific port ranges.
Hovatek is a well‑known resource for Spreadtrum / Unisoc tools. They offer both drivers and a Google‑USB‑driver pack:
Visit Our Social Media Pages
Equal Housing Lender. The Joe Metzler Team at Cambria Mortgage lends in Minnesota, Wisconsin, Iowa, North Dakota, South Dakota, Colorado, and Florida only. This is not an offer to lend or to extend credit, nor is this a guaranty of loan approval or commitment to lend. Information here can become out of date, and may no longer be accurate. Products and interest rates are subject to change at any time due to changing market conditions. Not all programs available in all states. Actual rates available to you may vary based upon a number of factors. Consumers must independently verify the accuracy and currency of available mortgage programs. All loan approvals are subject to the borrower(s) satisfying all underwriting guidelines and loan approval conditions and providing an acceptable property, appraisal and title report. Joe Metzler, NMLS 274132, Cambria Mortgage NMLS 322798. © 1998 - 2025.