Download Vivo Y91c DA File For FRP And Flashing / MTK Secure Boot DA & Auth File

Download Vivo Y91c DA File For FRP Unlock And Firmware Flashing [MTK Secure Boot DA & Auth File]

Today we are sharing tested Vivo Y91c download agent file for FRP unlock or firmware flashing. If you are user of latest Vivo Y91c Smartphone and now trying to install stock firmware or frp unlock by using any MTK tool then definitely you will get DA file failed error.

That’s way we are adding latest custom DA file for Vivo Y91c mobile. After downloading it, you can apply frp bypass and firmware installation process without authentication or DA file mismatch error.

At the time of loading firmware file of Vivo Y91c mobile, if the tool is asking to put correct DA file then don’t think that your firmware file is corrupted.  Basically, this error directly related with DA file which comes with every MTK flash tool. But in case, default DA file is not compatible with your MTK device then it will show the same error. To resolve this issue, you need to use custom da file in place of default DA file.

Probably you may know that now a days most off all android Smartphone comes with secure boot feature. Just because of this new secure boot feature, default DA file of tool’s can’t work properly.

So replace the DA file of your MTK tool with new Vivo Y91c custom Download Agent secure boot file and flash your device without any error.

After getting too many quarries about DA File mismatch in Sp flash tool for Vivo Y91c mobile, developer start their work and released custom Download agent file for Vivo Y91c MTK phone. It’s must to know that Vivo Y91c secure boot DA file is tool specific and works on specific Mediatek flash tool.

In this post we are sharing universal custom DA file for Vivo Y91c and you can use it with sp flash tool, miracle tool, NCK dongle and CM2 box etc.


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What Is MTK Secure Boot DA File?

May be you know that Latest Mediatek increased complexity in flashing firmware like sign.img and secure boot. So now it’s not as simple to flash device directly. Das are strategic following the increase in the need for boxes and dongles to perform task, even in the use of Sp flash tool for frp unlock.

In short, if you are trying to flash any MTK phone which have secure boot feature, the tool will show Da File MisMatch error” or “Authentication error” or “Buffer error” etc. As a solution, we have to use custom Da file or custom download agent file insist of default da file which comes with MTK tools.

Why you Need To use Custom DA Secure Boot File For Vivo Y91c

Vivo Y91c Smartphone is based on MediaTek MT6765 chipset which comes with secure boot feature. That why we can’t flash it directly with default DA files. During the flashing or frp unlocking using SP flash tool, it will show authentication error or buffer errors. Similarly, CM2 box, Miracle tool, NCK dongle will show secure boot! Error.

Because of this Vivo Y91c DA file is important to perform error free process.

Download Vivo Y91c DA File Tested

New Custom DA File Vivo Y91C Download : Vivo Y91C DA & Auth_2.rar

How To Use MTK DA File On Vivo Y91c Mobile

Use of custom da secure file is very easy. There is no any rocket science. It’s simple to use new custom DA file if you are familiar with default/normal DA files.

As we already told you, each and every MTK flash tool contains the DA file. But if it’s notifying authentication error or DA file mismatch error then use the custom DA file. That’s it. Here we are adding different tools with custom DA file.

Use OF Vivo Y91c Custom DA File With SP Flash Tool

Download SP Flash Tool [ All Versions ]

  • Download and extract the download Vivo Y91c DA zip file on pc.
  • Launch SP Flash Tool as administrator.
  • Click on “choose” button from “Download agent” section and load new Vivo Y91c secure boot da file.
  • Same as load scatter.txt file from firmware folder.
  • Now apply the same firmware flash method or FRP unlock method.

Use DA File With NCK Tool

NCK Tool Without Box Free

  • Extract the downloaded “MTK Alcatel DA zip file” on computer.
  • Run “NCK Tool” on pc as administrator.

Navigate to “Main” tab >> “Select Custom Loader” option and load “MTK Alcatel DA file and then continue the process.


Use DA File With CM2 Tool

  • Launch the tool as administrator.
  • Tick mark on “Enable” option to enable custom upload of MTK Alcatel DA file.
  • Click on “DA” button to load “MTK Alcatel DA file” from extracted folder.

This is all about how to download DA file for Vivo Y91c for flashing and frp unlock? Just download Vivo Y91c custom DA file from above download section and use it with any MTK flash tool.

This new tested Vivo Y91c DA file will help you to unbrick your device without DA file error.

Jagmohan Singh Negi

I am Jagmohan Singh Negi A Tech Enthusiastic Person. I always want to explore something new and experiment on Android Smartphones, here on i share solutions of Latest Android Bugs and Their Fixes, Latest Android launches, and How-to-Type Solutions for All Android Smartphones.

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