I’m going to make this a little bit easier for those who have successfully upgraded their Infinix hot 2 X510 to Android 6.0but want to downgrade it back to Android 5.0 or Lollipop 5.1 due to some of the bug on the Android 6.0. If you can no longer wait for infinix to release bug fixes for this latest Android 6.0, then you can go ahead and downgrade it back to Android 5.1 or 5.0 stock OS.

Before you begin, please back up your files and document to avoid stories that touch.

Requirements
SP Flash Tool (download here)
VComm Drivers (download here)
Infinix Hot 2 Stock Rom (download here) or Android 5.1 lollipop Rom (download here)

STEPS
1. Navigate to the SP flash tool folder
2. Run the SP flash tool.exe as admin
3. Click on scatter loading. Navigate to the infinix hot2 rom folder and select the “MT6580_Android_scatter.txt”
4.At the left hand side just below the ‘scatter loading’ panel click on ‘download now’ then change it to’firmware upgrade’

5. Switch off your Phone (make sure it has about 90% charge) and connect it to your PC using usb cord

6. A progress bar should start running. The phone will be downgraded on booting-Make sure you don’t tamper with usb at this point.

The final result after about 5-10 min should be like this if all went well

7. After that confirmation close flash tool. Disconnect phone and switch it on. It will take some minutes before the setup is complete.

Finally, go to Settings >> About to confirm that yourInfinix Hot 2 X510is now running on Android 5.0 or 5.1 depending on the Rom you downloaded.