Here you can download Official Stock Firmware for the Symphony W25 Android device. The downloadable file High Compressed in an archive, You will get the Flash File after extraction. Included contains USB Driver and how-to Flash manual instructions.
[*] Chipset: Qualcomm.
[*] Driver: Qualcomm Android USB Driver.
[*] Flash Tool: QualFast Tool.
Firmware for Symphony W25
Build Number: TBW591321_8379_V0315
Android Version: v2.3.6 (GingerBread)
Download Size: 192 MB
[*] Backup: During the flashing process OEM Flash Tool tool will erase user data from the phone. So you need to backup for restoring those files on your device.