If the motherboard of Itel A62 mobile is not completely dead, but gives an error midway during flashing, then the main reason for this is the secure boot policy. The DA file temporarily disables this policy and allows you to complete the incomplete flashing again. Whenever some users try to root or flash a custom ROM on their Itel A62 mobile, the bootloader gets blocked. The DA file enables the flashing tools at this point to write a custom recovery or patched boot image to the mobile, and the user can install the operating system of their choice.
When the mobile is booting only in test point mode and normal flashing fails, the presence of DA file becomes indispensable in Itel A62 model. This file takes the mobile into bypass mode, where every partition can be written, be it security, system or nvram. Sometimes people face imei gone or invalid baseband in Itel A62 mobile. At this time, DA file not only gives permission to the tool but also provides the ability to restore the modem partition so that the network comes back.