Navigate to your firmware folder and select the MT65xx_Android_scatter.txt file.

Since manufacturers change frequently, search for your specific on sites like:

Select (Avoid "Format All + Download" unless necessary, as it may erase your IMEI/Serial number). Click the Download button (green arrow). Power off your KT107 tablet completely. While the tablet is OFF, connect it to your PC via USB. A red bar will appear, followed by a yellow progress bar. Step 5: Completion