Click on the "Choose" button next to the "Scatter-loading File" field.

Bypassing FRP (Factory Reset Protection) or pattern locks. MT6580 Android Scatter TXT Link & Download

Avoid checking the "Preloader" box unless you are absolutely sure the firmware is a 100% match for your hardware. If the preloader is flashed incorrectly, the device may lose all communication with the PC.

These are the most reputable communities for finding device-specific firmware links.

In this guide, we will break down what this file does, where to find it, and how to use it safely. What is an MT6580 Scatter File?