Free Download Latest Upgrade Firmware For Samsung S6 B800 V1.4 (MTK-Clone) First Check your Device hardware problem if have any hardware related problem Fix this problem first then flash your device.
- make sure your device Battery is full 70% Up is better.
- Check Your Device Usb Connector clean this connector.
How To Know This is Flashing Problem ?
If your device is auto restart, Call Phone is slowly working any option is not work properly. auto application install, virus attack, application not working if you forget your user password and if can't unlock it any others way.