While the tool includes a default MTK_AllInOne_DA.bin , some secure-boot devices require a specific DA file provided with the ROM to establish a connection. Proper Selection Process
Select one ROM. Save a phone.
By selecting a ROM package, you ensure that the firmware being flashed on your device is authentic, compatible, and free from corruption. While the tool includes a default MTK_AllInOne_DA
Some newer MTK devices (running Android 8, 9, 10+) require specific authentication files to authorize the flash. If the tool cannot verify the files, it may reject the execution. it may reject the execution.