Steps on how to flash Tecno Pouvoir 3, Pouvoir 3 Air, Pouvoir 3 Plus with A Flash Tool:
Step 1: Download and install MTK drivers.
Step 2: Or you download and install MT65XX VCOM drivers (Preferable) from here.
Step 3: Download SP Flash tool (latest version is preferable) from here.
Step 4: Download the stock ROM of the device you want to flash or unbrick from here.
Step 5: Extract SP flash Tool and open the folder, now run the SP flash tool as administrator.
Step 6: Now extract the stock ROM you downloaded and go back to SP flash tool.
Step 7: Now click on scatter-loading button on the SP flash tool and you need to go to the stock ROM folder you extracted.
Step 8: You will see a scatter file in there, double click on it to select it (it will look like MT6572_Android_scatter). The number may be different.
Step 9: Now untick preloader (this is not required unless the device is completely dead.
Step 10: And also make sure you untick DSP_BL if found on the list that will be shown in the SP flash tools.
Step 11: Now you need to click the Download button and power off the device, remove the battery ( if the battery is inbuilt power off the phone and waits for 10 minutes).
Step 12: Now connect the device to the computer with the USB and wait for the SP flash tool to detect it.
Step 13: Immediately the phone has been detected a red line will be at the bottom then followed by a yellow line.
Step 14: After the flashing is done or completed you will see a big green tick shown on the screen.
Step 15: Now power on the phone and wait for it to boot, it might take minutes if it does not boot up then remove the battery, if it’s an inbuilt battery, press the power button for 15 seconds and the phone will power off or restart.