If system mount failed, userdata mount failed, or cache partition error occurs in Tecno Spark 2 KA7 mobile, then these cannot be fixed by normal flashing. The only solution to all these problems is the DA file which provides access to the secure zone of the mobile. Without it, important system files cannot be updated or repaired. Most new technicians think that only scatter file and firmware are enough, but when advanced mobiles like Tecno Spark 2 KA7 come out, their hard work fails. The DA file is the one component without which the flashing process becomes incomplete and fails. By adding it, you can not only complete the flashing but also avoid problems like secure boot error.
If the mobile stops at a certain point during flashing or the progress bar does not move forward, then understand that the DA file is missing. Especially when the mobile has a MediaTek chipset like Tecno Spark 2 KA7, then the DA file becomes indispensable. It is the gateway that allows your flashing tool to reach the mobile system. When users try to remove Google FRP and cannot access fastboot or recovery mode, they think that nothing is possible anymore. But the DA file is very helpful in such a situation, as it makes flashing possible in the phone even without USB debugging or OEM Unlock, especially for MediaTek phones like Tecno Spark 2 KA7.