This is CSharp Project For Spreadtrum Unisoc Diag ... - GitHub
If the device is powered on and has USB debugging enabled, you may be able to use: adb shell setprop sys.usb.config diag,adb . Draft Review: SPD Diag Mode Experience Rating: ★★★★☆ (4/5) enter diag mode spd
This occurs when the servicing software fails to send the keep-alive handshake command fast enough. Disconnect the device, perform a hard restart, ensure your software is updated, and select the precise chipset model instead of using generic auto-detect parameters. "USB Device Not Recognized" This is CSharp Project For Spreadtrum Unisoc Diag