Some specific variants of Infinix Smart 2 HD X609 mobiles have anti-rollback protection. The DA file enables the tools to install lower firmware versions, provided that the user's only goal is to recover the mobile. Sometimes, even if you only want to fix the IMEI, or recover a null IMEI, the tool will not accept the modem partition without the DA file. This file enables every hidden function. In Infinix Smart 2 HD X609 mobiles, if recovery or fastboot access is not possible, the DA file gives a direct command to the mediaTek chip to go to EDL or brom mode, and then start flashing.
Sometimes the mobile data line is not detected, and only charging is shown. The DA file authorizes the USB port and converts it to data mode, after which communication is possible. If the Infinix Smart 2 HD X609 model has intact hardware but flashing fails every time, then remember that there is probably a preloader block, which only the DA file can unlock. This is a special access layer that is given to tools. The DA file not only unlocks but also enables operations like memory test, hardware diagnosis, and device id read. Users of Infinix Smart 2 HD X609 mobile can take maximum advantage of it.