: You must install the SPD USB Drivers to ensure your PC recognizes the device.
: Download the official Stock ROM (.PAC file) specific to your device model. all-in-one-spd-flash-tool-free-download-my-blog
This guide provides a comprehensive overview of the (also known as the Spreadtrum Upgrade Tool), an essential free utility for flashing firmware, updating, or repairing devices powered by Unisoc (Spreadtrum) chipsets. What is the SPD Flash Tool? : You must install the SPD USB Drivers