: Uninstall the current driver completely, reboot, and install an older legacy version of the SPD driver pack. Error: The COM Port Changes Constantly
If the .exe installer fails, force the driver update through Device Manager as shown in the "How to Install" section above. Frequently Asked Questions
Run in CMD (after driver install):
Look for a device labeled , SPRD MCU Device , or Unknown Device with a yellow warning icon. Right-click it and select Update driver .
Windows operating systems frequently block unsigned virtual COM port drivers. Follow these steps to bypass restrictions and bind the device to COM 22 manually. Step 1: Disable Windows Driver Signature Enforcement sprd u2s diag -com 22- drivers download
Yes. This is a driver. It appears only when the phone is connected in DIAG mode. It is not a permanent device like a mouse or keyboard.
This article provides direct download links, compatibility details, and a step-by-step installation guide to get your device connected. Direct Download Links for SPRD U2S Diag Drivers : Uninstall the current driver completely, reboot, and
When working with smartphones or feature phones running on Spreadtrum (now Unisoc) chipsets, you may need to enter "Diagnostic Mode" (Diag Mode) for flashing, unlocking, IMEI repair, or advanced debugging.
: Offers various versions, including the newer 4.21.39.134 (released Sept 2021) which is compatible with Windows 10 and 11 (64-bit). Right-click it and select Update driver