1. Open SP Flash Tool (DO NOT CONNECT YOUR PHONE YET). - Flash_tool.exe
2. Click on "Scatter-loading" on the right side of the screen.
3. Choose your scatter file from the firmware package (MT6572_Android_scatter.txt
4. Click "Download" at the top
5. Turn off your phone. To be safe, remove the battery and put it back but DO NOT TURN ON THE PHONE.
6. Connect the phone to the PC. The progress bar should move and show some activity.
7. When finished, the SP FLASH TOOL will tell you it's complete
MyPhone Agua Rio Fun Firmware
9. VERY IMPORTANT! Place the phone anywhere safe and don't touch it while booting. The phone will UPGRADE the TOUCH PANEL. When asked if you would like to upgrade, tap Yes or Proceed or whatever to make it start, then let it sit there for about 30 minutes until it is upgraded. DO NOT ATTEMPT TO REMOVE THE BATTERY unless it has already been an hour. IF YOU DON'T FOLLOW THIS YOU MIGHT BRICK YOUR PHONE.