Firmware infos :

 FileSystem: EMMC
 Manufacturer: SPRD
 Hardware: SP7731C_V1.0.0
 Using SC7731_EMMC scenario.
 Platform: sc8830
 Board: sp7731ceb
 Using SC7731_EMMC scenario.
 Build Id: MRA58K
 Model: SPRD
 Android Release: 6.0
 Android Version:   TC28B_ZK_I9556A_8P4_BAND18_iproandroid6.0_ipro_V01_20160805

Download :