Download Symphony i21 Firmware (Flash File)
Here you can download Spreadtrum SC7731G based PAC Stock Firmware for the Symphony i21 Android device. The downloadable file High Compressed in an archive, You will get the Flash File after extraction. Included contains Flash Tool, USB Driver, and how-to Flash manual instructions.
[*] Chipset: Spreadtrum SC7731G.
[*] Driver: SPD (SCI / NPI) Driver.
[*] Flash Tool: SPD Upgrade Tool.
Get Firmware for Symphony i21 (Flash File)
Build Number: i21_HW1_V6
Android Version: v6.0 (Marshmallow)
Download Size: 873 MB
Build Number: i21_HW1_V7
Android Version: v6.0 (Marshmallow)
Download Size: 873 MB
Symphony i21 Flash Tool & USB Driver
Note:
[*] 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 i21 phone powered by Spreadtrum SC7731G CPU. So you need to use SPD Flash Tools and SPD USB Driver 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.