Here you can download Qualcomm MSM8917 based QFIL Firmware for the Symphony Z10 Android device. The downloadable file High 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: Qualcomm MSM8917.
[*] Driver: Qualcomm Android USB Driver.
[*] Flash Tool: Qualcomm Flash Image Loader.
Firmware for Symphony Z10
Build Number: Z10_HW1_V6
Android Version: v7.1 (Nougat)
Download Size: 1.70 GB
[*] Backup: During the flashing process QFIL Flash Tool tool will erase user data from the phone. So you need to backup for restoring those files on your device.