While version "Jungov4" is a common legacy version, technical communities like Hovatek often host download links and troubleshooting guides for various Spreadtrum (SPD) driver versions.
: If you have other chipset drivers (like MediaTek or Qualcomm) installed, they can sometimes cause COM port conflicts. Reinstalling the specific SPD driver usually resolves this. spd sciandroidusbdriverjungov4 link