sprdvcom.inf (Virtual COM) and musbser.inf (USB Serial).
Obtain the 64-bit version of the SPRD U2S Diag driver from a reliable source like DriverMax or Treexy .
Operates as a virtual COM port (e.g., COM3, COM15) for serial communication. How to Install on Windows 10 (64-bit)
Allows ADB and diagnostic tools to interact with the device.
Essential for using tools like Spreadtrum Upgrade Tool or Research Download Tool.
You can find the compatible 64-bit drivers through several technical repositories: