: It supports both older and newer Spreadtrum smartphone and feature phone series (SC****). Versions and Availability SPD Service Tool v1.0.0.3770
Read and Write Firmware: It supports reading the current flash file from a working device or writing a new firmware (PAC file) to a bricked or boot-looping phone. spd service tool v1.0.0 free download
Hold the (usually Volume Down or Volume Up, depending on the model). Connect the phone to your PC via USB while holding the key. : It supports both older and newer Spreadtrum
: Facilitates updating devices to newer Android versions (such as Android 7.0 through 9.0). Technical Requirements spd service tool v1.0.0 free download