Once properly initiated, the device will jump from Other Devices into the drop-down menu. It will read as follows: SPRD U2S Diag (COM22) Resolving Common Installation Bottlenecks Driver Randomly Disconnects or Changes COM Numbers
Essential for tools like SPD ResearchDownload or UpgradeDownload to write new software to the device.
: Essential for tools like the SPD Upgrade Tool to write new software to the device. sprd u2s diag -com 22- drivers download
When connecting a Spreadtrum phone (like ZTE, Lenovo, or budget devices) in this mode, Windows often fails to recognize it, displaying it under "Other Devices" with a yellow warning triangle.
The SPRD U2S Diag -COM 22- is a diagnostic tool used for testing and troubleshooting serial communication ports. To function properly, this tool requires specific drivers to be installed on the computer. The purpose of this report is to provide information on downloading and installing the necessary drivers for the SPRD U2S Diag -COM 22-. Once properly initiated, the device will jump from
Without the correct driver, Windows will not recognize the device. Your flashing tool will show errors like:
If you are trying to service, flash, or unbrick a smartphone powered by a Spreadtrum (now UNISOC) processor, your computer needs to communicate with the device. This connection requires a specific software bridge known as the . When connecting a Spreadtrum phone (like ZTE, Lenovo,
Hold down the key while clicking Restart in the Windows Start Menu.
sprd_u2s_diag -com 22 -info
Hold the or Volume Down key (or both) while plugging in the USB cable to the computer. Check if the device appears in Device Manager.
If you see an "Unknown Device" in Device Manager, check for these Hardware IDs to confirm it requires the SPRD U2S Diag driver: USB\VID_1782&PID_4D00 USB\VID_0525&PID_A4A7 USB\VID_1782&PID_4D16 How to Download and Install