Flashing Guide INFINIX X510

I have an Infinix Hot 2 (X510) issued by the Indonesian distributor. At the time of the update to android 6 (Marshmallow) phone becomes slow and all the data residing in the internal memory is lost. And more strange little remaining memory capacity.
So I took the initiative to restore to a previous system that is to android 5.1.1 (Lollipop).
Previous first download the tools here

 1. After the download is complete, double-click to run the compressed file, open the folder, as shown.

2. Extracting archive Infinix_Flash_Tool_exe_Windows_V1.0
3. Double-click to open the application flash_tool. exe
4. Click this button 

5. Enter the package folder, select the figure below, click on Openselect the figure below, click on Open

6. After the software has finished loading click this button.

7. The phone off, USB connected to the computer, wait for the download to complete

After performing the steps as above normal my phone back to the lollipop as I bought the first time. In order to update the system does not return to the marshmallow turn off notifications on updates to existing systems improved version.