If you want to remove FRP lock but your Tecno IN2 mobile is not responding during flashing, then you may need DA file. This file specifically helps in bypassing unlocks and scans that usually prevent the mobile from being detected. DA file is very important for those users who flash their mobiles themselves. Especially in mobile phones like Tecno IN2 where Secure Boot is on, flashing is not possible without this file. When the mobile is connected in SP Flash Tool but gives an error at some percentage, then it is due to the absence of DA file or the wrong file. It is very important to use the correct DA file for phones like Tecno IN2.
If you have ever noticed that the mobile gets disconnected as soon as the flashing process starts, then this is also due to Secure Boot. The DA file is actually the authorization that provides secure connection to the Tecno IN2 mobile with the SP Flash Tool. Most models of Tecno IN2 mobile have default secure boot enabled, meaning the mobile does not allow any unauthenticated file to be loaded. The DA file is necessary so that you can temporarily unlock the mobile and get permission for flashing.