Warm Tips for Flashing Firmware on Vivo Y12:

Before you begin the firmware flashing process on your Vivo Y12, it’s important to follow a few essential precautions to ensure the safety of your device and your personal data.

Important Note:

Due to system restrictions starting from Android 8 and above, your Vivo Y12 (which runs on Android 9 or higher) cannot be downgraded to any firmware version lower than the one currently installed. Attempting to flash an older version might fail or even cause system issues.

To check your current software version, simply go to Settings > System Update on your Vivo Y12. Always ensure you are flashing the correct version or a newer version compatible with your device.

Before You Begin – Backup Your Data and Check Battery:

It is highly recommended to back up all your important data — including contacts, photos, videos, messages, and app data — before starting the firmware flashing process. This prevents any accidental data loss during the installation. You can use Vivo Cloud, Google Drive, or transfer your data to an SD card or computer.

Also, make sure your Vivo Y12 is charged sufficiently. The battery level should be at least 30% or higher. A low battery during the process can interrupt installation and may damage the phone’s system.

Step 1: Download the Correct Firmware for Vivo Y12

• Visit the official Vivo website and navigate to the Support or Downloads section.

• Search for the specific firmware that matches your Vivo Y12 model.

• Download the firmware package to your phone or your computer.

Important: Using incorrect or incompatible firmware may cause serious system errors or prevent your phone from booting. Always double-check that you have the correct file.

Step 2: Move the Firmware Package to the Root Directory

• After downloading, move the firmware package (usually a .zip file) into the root directory of your Vivo Y12’s internal storage or SD card.

• Do not unzip or extract the firmware file. Leave it exactly as downloaded.

What is the Root Directory?
The root directory is the main storage area you see when you open your file manager. For example, in Google Files or Vivo’s File Manager, when you tap on Internal Storage, the files listed right there — not inside any folders — are located in the root directory. That’s where the firmware package should be placed.

Step 3: Install the Firmware on Vivo Y12

Based on your device’s condition — whether it’s working normally or stuck — choose the appropriate method below:

If Your Vivo Y12 is Functioning Normally:

1. Go to Settings > System Update.

2. Tap the Settings icon (top-right corner).

3. Select Local Upgrade.

4. Locate the firmware file you placed in the root directory.

5. Tap the package to start the installation.

The Vivo Y12 will verify the firmware and begin installing. During this process, your phone may restart several times. Please wait patiently and avoid interrupting the process.

If Your Vivo Y12 is Not Booting or Stuck:

1. Power off your Vivo Y12 completely.

2. Once the screen is black, press and hold the Volume Up and Power buttons simultaneously until the phone enters FASTBOOT Mode.

3. Use the Volume Down button to scroll and select Recovery Mode.

4. Press the Power button to confirm.

5. In Recovery Mode, select Install software.

6. Choose Phone Memory or SD Card depending on where the firmware file is stored.

7. Locate the downloaded firmware package and tap Install.

The system will begin the installation process. Make sure not to press any buttons or turn off the phone during this time. Once completed, your Vivo Y12 will automatically reboot with the updated system.

Additional Reminders for Vivo Y12 Users:

Once the installation starts, do not power off or disconnect the device.
Ensure the firmware file is completely downloaded and not corrupted.
After the update, you may need to restore your backup or reconfigure some settings.

By carefully following these steps, you can successfully flash the firmware on your Vivo Y12, whether you’re updating the system, fixing a bug, or giving your phone a fresh start.

If you face any issues or feel unsure about any step, it’s always a good idea to contact Vivo Customer Support or visit your nearest Vivo service center for expert assistance.