Here you can download MediaTek MT6755 based Scatter Stock Firmware for the Walton Primo X4 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: MediaTek MT6755.
[*] Driver: MTK USB Driver.
[*] Flash Tool: Smart Phone Flash Tool.
Firmware for Walton Primo X4
Build Number: Primo X4_0203_V5566
Android Version: v6.0 (Marshmallow)
Download Size: 1.94 GB
[*] Backup: During the flashing process SP Flash Tool tool will erase user data from the phone. So you need to backup for restoring those files on your device.
[*] Device Information: The Walton Primo X4 phone powered by MediaTek MT6755 CPU. So you need to use MTK SP Flash Tool and MTK USB Driver to flash Firmware on this device.
[*] Flashing Information: You should use only the “Firmware Upgrade” option in SP Flash Tool when you want to reinstall or upgrade the Software of your device. – “Format + Download” option only for Engineering Purpose.