Vivo Y91 Pattern Unlock Tool Download – MTK Vivo Y91 FRP unlock

unlock vivo y91 mtk android mobile with free Vivo Y91 Pattern Unlock Tool & FRP unlock toolDetail guide on how to unlock Vivo y91 when forgot pattern lock or password lock including FRP lock. latest Vivo Y91 Pattern Unlock Tool Download – MTK Vivo Y91 FRP unlock.

Do you have Vivo Y91 android Smartphone and device locked with pattern lock or PIN password? If yes then download Vivo Y91 pattern lock unlock tool and unlock your device safely. Moreover, users can also use the same MTK vivo Y91 unlock tool for PIN password unlocking.

Before going to unlock Vivo Y91 android phone, it’s important to know that this device comes with two different chipsets –MTK & Qualcomm. Because of this, unlocking tools and unlock files are also different according the cpu.

If your own Vivo Y91 mobile model is PD1818cf & PD1818DF that means it’s a MTK or MediaTek CPU based phone.

Now come to the main topic and learn more about the Vivo Y91 MTK phone unlocking [FRP & Pattern/password].

Probably you may know that we can remove pattern lock or pin lock of any android phone by factory reset. But it’s actually not possible with some new vivo devices. Vivo also added a new security feature with their device to prevent the unauthorized factory reset without the owner permission.

This new security feature automatically activates at the time of factory reset and asks you to enter the same existing screen lock password/pattern. In short, it’s quit impossible to remove Vivo Y91 screen lock without knowing the current screen lock.

So, now the question is “how to remove pattern lock on Vivo Y91 MTK android mobile?” This is very simple to unlock MTK vivo Y91 pattern lock or pin password without box. In this guide, we will discuss all about the vivo y91 security unlocking including frp lock.

As we already said, it’s almost impossible to perform factory reset manually. But we can use any paid or free vivo factory reset tool and frp unlock tool such as MTK sp flash tool or vivo adb format tool.

Let’s see how to unlock Vivo y91 MTK with vivo unlock tool [FRP And Pattern/password]?

About MTK Vivo Y91 Unlock Tool

If you try to search on internet, several premium and free mobile repairing tools are available for Vivo MTK phones. So you can choose anyone from them according to your own choice. But here we are going to use free SP flash tool and free vivo adb format tool as a Vivo Y91 MTk frp and pattern unlock tool.

Methods To Unlock Vivo Y91 FRP Lock And Pattern Lock Using Pc Tool

Several tools and pc software are available for vivo Y91 MTK factory reset and frp unlocking but here we are adding the best working technique. Download appropriate Vivo unlock tool and follow the below instructions according to your own choice.

Method 01 Unlock Vivo Y91 FRP and Pattern Using SP Flash Tool

Sp flash tool is one of the best and most popular free mobile repairing tool for all MTK devices [Smartphone & Tablets]. This tool can perform multiple tasks very efficiently like firmware flashing, device format, frp unlock, rooting, twrp flashing and new software installation etc.

Just because it’s an universal pc tool for all MTK phones, it also supports the MTK vivo y91 PD1818cf & PD1818DF models.

Factory reset To Remove Pattern Lock/Password On Vivo Y91 Using SP Tool

  1. Download Vivo Y91 MTK pattern unlock tool and files.


vivo y91 frp unlock file and tools
vivo y91 frp unlock file and tools
  • Extract the latest Sp flash tool zip file or get it from Vio y91 frp unlock file  and run flash_tool.exe as administrator.

sp flash tool

  1. Once the tool launched on pc, it will load “DA file automatically”. But you have to load “custom DA file for Vivo Y91 MTK device” from extracted folder. Click on “choose”’ button from “Download agent” section and browse the “DA_PL_MT6762_0321.bin” file from extracted vivo y91 da file and auth file folder.

Because of secure boot system, Default DA file (Download-Agent file) will not work for you. Load the “DA_PL_MT6762_0321.bin” file manually.

custom da file for Vivo y91 mtk mobile
custom da file for Vivo y91 mtk mobile
  1. Again, click on “Choose” button from “Scatter loading file” section and browse the MT6765_Android_scatter.txt file.
vivo y91 scatter file
vivo y91 scatter file
  1. Now click on “choose” button from “Authentication” section and browse the “authfile_MT6762_0321.auth” file from “Yivo y91 auth file and DA file folder”.
vivo y91 auth file
vivo y91 auth file
  1. Now tick mark on “cache” and “userdata” option as shown in below screenshot. Leave untick other options because we are going to reset our device.

unlock vivo y91 pattern lock

  1. Remove and re-insert battery for once and connect the device with pc via working usb cable in power off mode.
  2. Next, select the “Download only” mode and then hit on “Download” button to start pattern lock removal process on Vivo Y91 MTK mobile.

  1. Wit for few seconds, tool will detect the device and start formatting your device. Here it may take couple of minutes and reset pattern lock in Vivo Y91 MTK PD1818cf & PD1818DF models.
  2. Done!!! After successful process, remove the device from pc and reboot device. This time it will not ask you to enter screen lock password or pattern lock.

Vivo Y69 FRP Unlock Using SP Flash Tool

If you were using any Google account on your device then device will stuck on Google account verification screen. Enter the Google account credentials which you were using on the same device. Otherwise, apply the below steps to remove FRP lock after factory reset vivo y91 MTK mobile.

  1. Repeat the steps 1 to 5 as it is as shown in above section.
  2. Next, navigate to “Format” tab from the top of the tool.

vivo y91 formatting

  1. Now select the “manual Format Flash” option, change the “begin address [Hex]” & “Format Length [Hex]” from below values.

begin address [Hex] – 0x5588000

Format Length [Hex] – 0x100000

vivo y91 formatting values

  1. Come the device, remove & re-insert battery, connect the device with pc in switch off mode.
  2. Hit on “Play” button to start formatting process. This will reset frp in Vivo Y91 MT6765 MTK Smartphone within few seconds.
  3. Done!!! Reboot your device and setup it again as a new device without screen lock and without frp lock or Google account verification.

Method02 Vivo Y91 Pattern And FRP Unlock With Vivo Format Tool

In case, if you are getting any issue to unlock MTK vivo y91 frp and pattern lock then use the new vivo adb and format tool as a Vivo y91 pattern unlock tool / frp unlock tool. Vivo format tool is very efficient pc software which is also known as vivo hard reset tool. Just because this vivo format tool can unlock frp and screen lock [password/pattern/fingerprint] at the same time, we also recommend you to use it as vivo y91 password removal tool.

This vivo unlock tool or MTK vivo adb format tool 2020 is specially designed for MTK vivo Smartphones. We successfully tested this tool on many devices to remove frp and pattern lock.

Vivo Y91 Pattern Unlock Tool DownloadAdb Format Tool

Quick Steps To Use Vivo Y91 Format Tool [FRP & Pattern Unlock]

  • Take backup of the device using vivo PC suite latest software. [only if possible]
  • Install “MTK Vivo USB Drivers” on windows pc.
  • Reboot Vivo Y91 into recovery mode manually.
  • Now again reboot device into “reboot with adb” mode from “advanced” option.
  • Attach the device with pc.
  • Extract the new Vivo adb format tool zip file and launch the tool.
  • Select the correct COMPORT and then hit on “BTN2” button to remove vivo pattern lock.
  • Wit for few minutes to complete the formatting process.
  • Setup the device again and click on China logo then click on ok from next screen.

  • Done!!! Setup the device again as a new device without entering the Google account ID, password and phone’s screen locks.

Detail Guide To Use Vivo ADB Format Tool

These are two working methods to unlock vivo y91 mtk android mobile with free Vivo Y91 Pattern Unlock Tool & FRP unlock tool. Download the latest Vivo y91 frp or password unlock tool and follow the appropriate vivo unlocking method from above tutorial.

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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