stands for Spreadtrum Communications . In 2014, Spreadtrum merged with RDA Microelectronics, and the combined entity was later rebranded as Unisoc . If you see "SPRD," it means the device is powered by a Unisoc/Spreadtrum chipset (e.g., SC7731, SC9832, SC9863, Tiger T610, etc.).
Platforms such as DriverMax and DriverScape host various versions, including the latest UNISOC Communications Inc. driver version 4.21 . Manual Installation Guide sprd u2s diag -com 22- drivers download