If you are looking to connect your Spreadtrum (SPD) or Unisoc-powered device to a PC for firmware flashing, data transfer, or unlocking, you likely need the SPD SCI Android USB Driver

Commonly referred to as the , this utility acts as a bridge between your computer and mobile devices that use SCI (Spreadtrum Communications Inc.) hardware. The "Jungo v4" version is a specific driver stack designed to handle complex serial-to-USB communications, ensuring that tools like SPD Upgrade Tool or Research Download can "see" your device even when it is in a low-level boot mode. Key Features

You can find the driver at several reputable firmware and mobile software repositories: Official Mirrors Tech-Latest

Are you trying to , or are you just looking for the most stable version of this driver? Unisoc | Spreadtrum SPD drivers for Windows (SCI & USB)