The Vivo Y91 is packed with a 6.22-inch HD+ IPS display powered by a Qualcomm Snapdragon 439 chipset with 3GB RAM, 32/64GB ROM, 13MP + 2MP main cameras, an 8MP front-facing camera, and a 4030mAh battery. Now, if you’re using the Vivo Y91 device and facing issues like authentication or buffer error, you will need to fix it via the SP Flash Tool or Miracle Box or CM2 box. But if you don’t fix it, you will encounter a secure boot error. In order to flash those devices, you will require a Secure Boot DA file. Here you can download and install Vivo Y91 MTK Secure Boot DA file.
If your MediaTek powered Android device got corrupted or bricked, you will require a Download Agent file to access its onboard storage and fix it. Here in this guide, we will share with you the steps to install the Download Agent (DA) files for your device. The boot file or firmware file is also known as the DA file. The DA file is necessary to flash any file into a sucre boot enabled MTK device.
Vivo Y91 Device Overview
Vivo Y91 was announced in November 2018 which sports a 6.22-inch IPS LCD display with a screen resolution of 720 x 1520 pixels. The device has an aspect ratio of 19:9 and a screen-to-body ratio of 82.9 %.