You need the correct .PAC or .P5C firmware specifically designed for your exact device model.
SPD Flash Tool (also known as the Spreadtrum Upgrade Tool is a specialized Windows utility used to flash firmware (stock ROMs) onto mobile devices powered by Spreadtrum/Unisoc chipsets. spd flash tool r2.9.9005
: Flashing the wrong firmware version or a corrupted file can permanently "brick" your device. You need the correct