Sometimes when a mobile user takes a ALCATEL Pop 3 5015 phone to a shop to get it flashed, they tell him that “this mobile is secure, it will not work with normal tools.” This means that the mobile has Secure Boot Enable. This feature is installed by manufacturers so that unauthorized software is not installed in the mobile. But when the firmware of the mobile gets corrupted and the user only has non-authorized firmware, then the DA Auth File is required. This file is loaded at a special location within the SP Flash Tool, which allows the tools to temporarily disable secure boot and install the firmware. Without DA, the tools cannot detect the USB port. This file is also special in that it works at the RAM level, that is, it gives system access in a temporary session and as soon as the mobile boots, this session ends, thus security is not affected..
When the ALCATEL Pop 3 5015 mobile has a hang on logo or bootloop problem, the user often does a cache clean or factory reset. But if the bootloader itself is corrupted, then all these light efforts prove useless. DA Auth File comes in handy when you need to reset the internal boot structure of the mobile. This file is device-specific, meaning it is different for each mobile, which is signed by the manufacturer. After loading this file, you get root access in brom mode, then boot, recovery, vbmeta and system partitions can be installed fresh. All this is possible in this condition when you have the exact DA file, which not only allows flashing but can also bypass preloader security.