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Introduction
Vivo Y91 is one of the popular smartphones that comes with impressive features and specifications. However, as a user, you may want to unlock the bootloader of your Vivo Y91 to install custom ROMs, root your device, or perform other advanced operations. In this article, we will guide you through the process of unlocking the bootloader on your Vivo Y91.
What is Bootloader?
Before we proceed, let’s understand what bootloader means. A bootloader is a program that loads the operating system (OS) of your device when you turn it on. It is a crucial component of your device as it ensures that the OS is loaded securely. However, the bootloader of your device is locked by the manufacturer to prevent users from making any changes to the system.
Why Unlock Bootloader?
Unlocking the bootloader of your Vivo Y91 gives you complete control over your device. It allows you to install custom ROMs, tweak system settings, and perform other advanced operations that are not possible with a locked bootloader. However, unlocking the bootloader voids your device’s warranty, and it may also lead to security risks.
Prerequisites
To unlock the bootloader on your Vivo Y91, you need to fulfill the following prerequisites:
- A PC/Laptop with a reliable internet connection
- A USB cable to connect your device to the PC
- Vivo Y91 with at least 50% battery charge
- Backup your data as unlocking the bootloader will erase all the data on your device
Steps to Unlock Bootloader on Vivo Y91
Follow the steps below to unlock the bootloader on your Vivo Y91:
Step 1: Enable Developer Options
To enable developer options on your Vivo Y91, go to Settings > About Phone > Tap on Build Number 7 times. This will enable developer options on your device.
Step 2: Enable USB Debugging
Once you have enabled developer options, go to Settings > Developer options > Enable USB debugging.
Step 3: Apply for Unlocking the Bootloader
Visit the Vivo official website and apply for unlocking the bootloader on your Vivo Y91. You need to provide your device’s IMEI number, model number, and other details to complete the application process.
Step 4: Receive the Confirmation Code
Once you have submitted the application, Vivo will review your request, and if it is approved, you will receive a confirmation code on your registered email address.
Step 5: Unlock the Bootloader
Download the Vivo bootloader unlocker tool on your PC and connect your device to the PC using a USB cable. Enter the confirmation code that you received in Step 4 and click on the ‘Unlock’ button. This will unlock the bootloader on your Vivo Y91.
Step 6: Boot into Fastboot Mode
To boot into fastboot mode, switch off your Vivo Y91 and press and hold the Volume Up button and Power button simultaneously until the fastboot logo appears.
Step 7: Install Custom Recovery
Download the custom recovery that you want to install on your device and transfer it to your device’s internal storage. Boot into fastboot mode, connect your device to the PC, and open the command prompt on your PC. Enter the following command:
fastboot flash recovery [filename.img]Replace [filename.img] with the name of the custom recovery image.
Step 8: Reboot Your Device
Once the custom recovery is installed, reboot your device by entering the following command:
fastboot rebootConclusion
Unlocking the bootloader on your Vivo Y91 is not a difficult task if you follow the steps mentioned in this article carefully. However, it is important to note that unlocking the bootloader voids your device’s warranty, and it may also lead to security risks. So, proceed at your own risk and make sure to backup your data before unlocking the bootloader.
