If you are staring at "Unknown Device" in your Device Manager or your box tool simply refuses to detect your phone on , you are likely missing the correct Spreadtrum (SPRD) USB drivers.
Websites like driverdouble.com or treexy.com also host large collections of drivers. You can often find a version specifically marked as "SPRD U2S Diag (COM22)". sprd u2s diag -com 22- drivers download
USB\VID_1782&PID_0013&REV_0222
The (Spreadtrum USB-to-Serial Diagnostic) driver allows a Windows PC to recognize a Spreadtrum-based device in its diagnostic or "boot" mode. When a phone is connected while powered off or through a specific button combination (like Volume Down), the device presents itself as a serial COM port rather than a standard MTP storage device. SPRD U2S Diag - UNISOC Communications Inc. - DriverMax If you are staring at "Unknown Device" in
Before starting, it is highly recommended to if you are using Windows 10 or Windows 11. Spreadtrum drivers are frequently self-signed or legacy drivers, causing Windows to block them silently during installation. - DriverMax Before starting, it is highly recommended
Step 1: Disable Windows Driver Signature Enforcement (Recommended)
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