What My Device

How to Unlock Bootloader on OPPO Find X8 Pro

Disclaimer: This guide is provided for informational purposes only. WhatMyDevice is not responsible for any damage, data loss, or voided warranties resulting from following these instructions. Proceed entirely at your own risk. Always verify instructions against your device's official documentation.
OPPO Find X8 Pro

OPPO Find X8 Pro

OS: Android 15, up to 5 major Android upgrades, ColorOS 15
Screen: 6.78 inches, 111.7 cm2
Resolution: 1264 x 2780 pixels (~450 ppi density)
Battery: 5910 mAh
Storage: 256GB
Chipset: Mediatek Dimensity 9400 (3 nm)
Last updated:
Required Tools
Steps
  1. Step 1: Backup All Personal Data & Charge Phone

    Unlocking the bootloader will trigger a full factory data reset, erasing all photos, contacts, downloaded files, and app data.
    Ensure you backup all important files to a cloud drive or computer.
    Make sure your OPPO Find X8 Pro battery is charged to at least 60% before proceeding.

  2. Step 2: Enable Developer Options, OEM Unlocking & USB Debugging

    1. Open 'Settings' on your OPPO Find X8 Pro.
    2. Navigate to 'About Device' > 'Version'.
    3. Tap on 'Build Number' 7 times until you see the notification 'You are now in Developer Mode!'.
    4. Go back to 'Settings' > 'Additional Settings' > 'Developer Options'.
    5. Toggle ON both 'OEM Unlocking' and 'USB Debugging'.

  3. Step 3: Install & Apply in the In-Depth Test (Deep Testing) App

    1. Download and install the official OPPO In-Depth Test APK for ColorOS 15 / Android 15.
    2. Open the In-Depth Test app and tap 'Apply Now / Submit Application'.
    3. Read and agree to the disclaimer terms and submit your application.
    4. Wait for server verification approval (status usually updates within minutes).
    5. Once approved, tap 'Start the in-depth test' — your phone will reboot directly into Fastboot Mode.

  4. Step 4: Connect Device to PC & Verify Fastboot Connection

    1. Connect your phone to your PC via a USB cable.
    2. Open Command Prompt or PowerShell inside the extracted 'platform-tools' folder on your PC.
    3. Execute the command below to verify communication with Fastboot:

    fastboot devices
  5. Step 5: Execute Bootloader Unlock Command

    Once the device is detected, execute the unlock command in your terminal:

    fastboot flashing unlock
  6. Step 6: Confirm Unlock on Device Screen

    Look at your OPPO Find X8 Pro display.
    1. A warning prompt will appear asking if you want to unlock the bootloader.
    2. Use the Volume Down key to highlight 'UNLOCK THE BOOTLOADER'.
    3. Press the Power button to confirm.
    Your device will now wipe all user data and initiate the bootloader unlocking process.

  7. Step 7: Reboot into Android System

    If the device does not reboot automatically after formatting, run the command below:
    Note: The initial boot may take 5 to 10 minutes. Once booted, complete the initial setup.

    fastboot reboot