When you connect a Spreadtrum-based device (often budget smartphones or feature phones) to your PC in diagnostic mode, the system may fail to recognize it, appearing as "Other Devices" or an unknown "SPRD U2S Diag" in the Device Manager. Installing this specific driver assigns the device to a Virtual COM Port (such as ), allowing professional tools like ResearchDownload or UpgradeDownload to communicate with the phone's processor. Compatible Operating Systems
You can find these drivers through several repositories and official tool packages: Unisoc | Spreadtrum SPD drivers for Windows (SCI & USB) sprd u2s diag com 22 drivers download exclusive
These drivers are generally compatible with both and 64-bit (x64) architectures for the following versions of Windows: When you connect a Spreadtrum-based device (often budget
: Typically provides the most straightforward installation. Download Resources for SPRD U2S Diag Drivers Download Resources for SPRD U2S Diag Drivers