Note: Always check your device's exact chipset in "Settings > About Phone" before downloading a DA file. Using an MT6580 DA file on an MT6761 device can cause a hard brick. How to Use the Tecno BD3 DA File with SP Flash Tool

Never use a DA file meant for a different Tecno model (like the BD2 or BD4) on a BD3.

Extract the SP Flash Tool zip folder and launch flash_tool.exe .