: Windows 10 has strict requirements for driver signatures, ensuring that drivers are from trusted sources. Unsigned drivers may fail to install or operate.
To ensure you are downloading the correct driver, check if your device hardware ID matches one of these common strings: USB\VID_1782&PID_4D00 USB\VID_1782&PID_4D02 USB\VID_0525&PID_A4A7
: COM port number > 16 (some legacy SPD tools only scan COM1-16). Solution : Change COM port number: Device Manager → Ports → Right-click SPRD U2S → Properties → Port Settings → Advanced → COM Port Number (choose COM1-COM16).
Note: Always back up NVRAM before making changes via Diag mode – corrupted NVRAM bricks the device's radio.
Spreadtrum Communications, Inc., now known as Spreadtrum, Inc., and a part of UNISOC, is a Chinese fabless semiconductor company that specializes in designing and manufacturing chipsets for mobile phones and other electronic devices. Their products are widely used in feature phones, smartphones, and tablets.
You can find the compatible 64-bit drivers through several technical repositories:
