Below is an overview of the technical requirements, installation, and verification for recent versions such as the R2.0.00114 series. Key Functions of SPD Drivers
Even verified drivers can conflict. Here is how to resolve the top three issues:
This usually happens due to a faulty USB cable or port. Always use the original cable and try a USB 2.0 port instead of a blue USB 3.0 port, as older chipsets often struggle with 3.0 protocols. 3. Port Not Showing in Flashing Tool
| Issue | Solution | | :--- | :--- | | | This indicates a driver conflict or that the driver failed to load. Uninstall the device in Device Manager and restart your computer. | | "The hash for the file is not present..." | This error occurs because driver signature enforcement is still active. You must fully disable it as described in the preparation steps. | | Driver Power State Failure (BSOD) | This is a Windows Blue Screen of Death error. It is often caused by conflicting drivers, like the older SPTD driver. Ensure your system is clean of any conflicting CD/DVD emulation or older storage drivers. | | SPD.sys Warnings | If you see a warning about SPD.sys timestamp in a system log, it confirms the driver is not WHQL-signed. While the "200114" version may work, you should try to find a newer, verified signed version for better system stability. | | Device Not Detected | Ensure you are using a high-quality USB cable and connect directly to a motherboard USB port (avoid front-panel or USB hubs). Also, confirm your device is in the correct mode (usually powered off or in "Download" mode) before connecting. | spd driver latest version 200114 verified
In Device Manager, check under ; it should show "SPRD U2S Diag" or similar with no yellow warning icon. Troubleshooting Tips
the verified SPD_Driver_200114 zip archive from an authorized source or a trusted forum index like Xiaomi Tools or Hovatek.
: These drivers allow your PC to recognize a device in "SPD" (Spreadtrum) mode, typically for using tools like the SPD Upgrade Tool or Research Download Tool . Below is an overview of the technical requirements,
Computer fails to recognize the phone in Download Mode (usually when power button + volume down is held). Download SPD Driver Latest Version 200114 Verified
: Enables the PC to detect the device for file transfer, MTP, charging, and most importantly, firmware flashing via tools like SPD Flash Tool. Version Note
SPD drivers exclusively manage legacy telephony (POTS modems) and some integrated audio routing. You can uninstall the device entirely if you never use a dial-up modem or fax. However, disabling it sometimes corrupts Windows Power Management states. Always use the original cable and try a USB 2
No. While it is a specific stable version from January 2020, it is unlikely to be the absolute newest. Spreadtrum/Unisoc and device manufacturers release updated drivers periodically. However, it is considered a verified and stable baseline for many Alcatel and feature phone models. Newer versions (like R4.20.4201) have been released since then.
Troubleshoot a specific (e.g., "Driver version is too low").
After reboot, open Device Manager → Ports (COM & LPT). Your extra serial ports should appear as COM5, COM6, etc. Run a loopback test (connect TX to RX with a jumper) using PuTTY or Termite.
