When a user tries to repartition a Huawei Y3II LUA-L22 mobile, i.e. tries to resize the system or userdata, the mobile often fails to boot. To resolve this complex situation, the advanced options of SP Flash Tool are used, but they are of no use without the DA Auth File. This file gives the tools full low-level access so that they can reorganize the partition table. This way the mobile becomes able to run anew.
In Huawei Y3II LUA-L22 mobile, if the phone stops at the logo after flashing, then the problem is often due to vbmeta, dm-verity, or cust partition corruption. To manually fix such advanced system issues, specific files have to be flashed, but the secure boot barrier thwarts all these attempts. DA Auth File removes this barrier and allows tools to flash custom or patched vbmeta as well.