Download Symphony Z33 Flash File
Download Flash File
[*] Backup: During the flashing process SPD Flash Tool will erase user data from the phone. So you need to backup for restoring those files on your device.
[*] Device Information: The Symphony Z33 phone powered by Spreadtrum UniSoc T610 CPU. So you need to use SPD Upgrade Tool to flash Firmware on this device.
[*] Flashing Information: You can try different types of SPD Flash Tools to flash this Pac file if you see any of them show interrupted in flashing. The following Tools are Upgrade Download, Research Download, and Factory Download.