5star RX4 flash file without password 100% tested

official Firmware
 
How to flash
1. Extract firmware rar
2. inistall the USB driver if needed
3. Open SP flash tool
4. Select Android_scatter.txt
5. Then press "Download" button
6. Turn off phone, remove the battery
7. Connect your phone into the computer via USB data cable
8. The process will start and a red progress bar will appear after, yellow, gray and green circle display
Done

Firmware : 5star
Model : RX-4
File Size : 475 MB
Update : 2016-03-16