Flashing the OPPO A72: A Comprehensive Guide and Review

Flashing your smartphone has become a common practice among Android enthusiasts and developers. It offers a wide array of possibilities, from installing custom ROMs to simply restoring your device to its original factory state. The OPPO A72, with its balance of features and affordability, is a popular choice for many users, and the process of flashing it can open up new avenues for customization and performance improvements. However, flashing a device is not without its risks. This comprehensive guide will delve into the process, benefits, and potential drawbacks of flashing the OPPO A72, providing you with everything you need to know before proceeding.

1. Introduction to Flashing

Flashing a smartphone typically involves installing or re-installing the firmware or operating system (OS) on the device. This can be done for several reasons:

• To install a custom ROM: A custom ROM is a modified version of Android, often providing features and optimizations that the stock ROM does not.
• To unbrick a device: If your OPPO A72 is stuck in a boot loop or not functioning properly, flashing it with stock firmware can often restore it to working condition.
• To update or downgrade the OS: Flashing can be used to update the device to a newer version of Android or to downgrade it to an earlier version if the latest update is causing issues.
• To remove bloatware: Some users flash their devices to get rid of unwanted pre-installed apps that come with the stock ROM.

2. Understanding the Risks of Flashing

Before proceeding with flashing your OPPO A72, it’s important to understand the associated risks:

• Bricking the Device: If the flashing process is not done correctly, there’s a risk of “bricking” your device, rendering it unusable.
• Void Warranty: Flashing a custom ROM or altering the firmware can void your device’s warranty, meaning you may no longer be eligible for official support or repairs.
• Data Loss: Flashing will typically erase all data on your device, so it’s essential to back up your data before proceeding.
• Security Risks: Custom ROMs or modified firmware may not receive regular security updates, leaving your device vulnerable to attacks.

3. Preparations Before Flashing the OPPO A72

Proper preparation is crucial to ensure a smooth flashing process. Here’s a checklist to follow:

3.1 Backup Your Data

Flashing your device will erase all data, so it’s imperative to back up important files, contacts, messages, and apps. You can use:

• Google Drive: Sync your contacts, calendar, photos, and app data with Google.
• Third-party Apps: Apps like Titanium Backup (requires root) or Helium can be used to back up apps and data.
• Manual Backup: Transfer important files, photos, and documents to your PC or an external storage device.

3.2 Ensure Battery is Charged

Your OPPO A72 should be fully charged or at least 70-80% charged before you start the flashing process. A sudden power loss during flashing could brick your device.

3.3 Download Necessary Files

Depending on your goal (installing a custom ROM, restoring stock firmware, etc.), you’ll need to download the appropriate files:

• Stock Firmware or Custom ROM: Ensure you download the correct firmware or ROM version for the OPPO A72. The firmware should match your device’s region and model number.
• SP Flash Tool or Fastboot/ADB: These are common tools used for flashing Android devices.
• USB Drivers: Make sure the necessary USB drivers for the OPPO A72 are installed on your computer. These drivers ensure your device can communicate with your PC during the flashing process.

3.4 Enable Developer Options and USB Debugging

To flash your device, you’ll need to enable USB Debugging:

1. Go to Settings > About Phone > Tap on Build Number seven times to enable Developer Options.
2. Return to Settings > Developer Options > Enable USB Debugging.

4. Flashing the OPPO A72: Step-by-Step Guide

There are different methods to flash the OPPO A72, depending on what you aim to achieve. We’ll cover two common methods: using the SP Flash Tool and using Fastboot.

4.1 Flashing OPPO A72 Using SP Flash Tool

The SP Flash Tool is a popular utility used for flashing MediaTek-powered devices. However, since the OPPO A72 uses a Qualcomm chipset, we’ll focus on a similar tool designed for Qualcomm devices called the QFIL Tool (Qualcomm Flash Image Loader).

4.1.1 Download and Install Required Tools

1. Download QFIL Tool: Download the latest version of the QFIL Tool from a reliable source.
2. Install Qualcomm USB Drivers: Install the necessary Qualcomm USB drivers on your PC to ensure your device is recognized during the flashing process.

4.1.2 Boot Your Device into EDL Mode

EDL (Emergency Download Mode) is required for flashing using the QFIL Tool. Here’s how to enter EDL Mode:

1. Turn off your OPPO A72.
2. Connect your device to the PC via a USB cable.
3. Enter EDL Mode:
   • You can use a specific key combination, usually Volume Up + Power button (varies by device), or you may need to use a test point method if the key combination doesn’t work.

4.1.3 Load Firmware in QFIL Tool

1. Launch QFIL Tool on your PC.
2. Select the QFIL Configurations:
   • Select Build Type: Choose “Flat Build” under the Select Build Type.
   • Load Programmer: Click on “Browse” next to Programmer Path, and select the prog_emmc_firehose_XXXX.mbn file from the firmware folder.
   • Load XML Files: Click on “Load XML” and select the rawprogram0.xml and patch0.xml files from the firmware folder.
3. Verify Connection: Make sure your device is detected by the QFIL Tool. It should show a COM port number if connected correctly.

4.1.4 Flash the Firmware

1. Start Flashing: Click on the “Download” button to begin the flashing process. The process will take a few minutes.
2. Wait for Completion: Once the process is complete, you will see a success message in the QFIL Tool.

4.1.5 Reboot Your Device

1. Reboot: Disconnect your device from the PC and hold the Power button to reboot.
2. Initial Setup: Your OPPO A72 will boot into the newly installed firmware. You can now set up your device as you normally would.

4.2 Flashing OPPO A72 Using Fastboot

Fastboot is a protocol used to re-flash partitions on your device. This method is often used when you want to flash a custom recovery like TWRP or update/downgrade the bootloader.

4.2.1 Install Fastboot Tools and Drivers

1. Install ADB and Fastboot Tools: Download and install the ADB and Fastboot tools on your PC.
2. Install USB Drivers: Ensure that your PC has the necessary USB drivers for the OPPO A72.

4.2.2 Boot into Fastboot Mode

1. Power Off Your Device: Hold the Power button and select “Power off.”
2. Boot into Fastboot Mode: Hold the Volume Down and Power buttons simultaneously until the Fastboot screen appears.

4.2.3 Flash Firmware or Recovery via Fastboot

1. Connect to PC: Use a USB cable to connect your OPPO A72 to the PC.
2. Open Command Prompt/Terminal: Navigate to the folder where you installed ADB and Fastboot tools.
3. Check Device Connection: Type fastboot devices in the command prompt and press Enter. If your device is properly connected, it should show a device ID.
4. Flash Recovery/Firmware:
   • To flash a custom recovery, type fastboot flash recovery recovery.img, replacing recovery.img with the name of your custom recovery file.
   • To flash firmware, you might need to flash individual partitions using commands like fastboot flash boot boot.img, fastboot flash system system.img, etc.
5. Reboot: Once the flashing process is complete, type fastboot reboot to restart your device.

5. Post-Flashing Considerations

After successfully flashing your OPPO A72, there are several things you should do to ensure your device is functioning correctly and securely.

5.1 Verify Firmware Installation

Once your device has rebooted, it’s important to verify that the firmware has been installed correctly:

• Check the Android Version: Go to Settings > About Phone and verify the Android version, security patch level, and firmware details.
• Test Core Functions: Make sure that essential functions like calling, Wi-Fi, Bluetooth, and the camera are working properly.
• Check for Updates: If you’ve installed stock firmware, check for any available updates through Settings > Software Updates.

5.2 Reinstall Apps and Restore Data

If you backed up your data before flashing, you can now restore it:

• Restore from Google: Sign in with your Google account and restore your apps and data from Google Backup.
• **Use Third-Party Backup and Restore Tools: If you used third-party backup tools like Titanium Backup, restore your apps and their associated data. Remember, if you’ve flashed a custom ROM, some apps might not be compatible or might require reinstallation from the Google Play Store.

5.3 Reconfigure Settings and Customizations

After flashing, you may need to reconfigure certain settings and customizations according to your preferences:

• Re-enable Developer Options: If you need to use Developer Options (e.g., for USB debugging), re-enable them by tapping the Build Number in the About Phone section.
• Customize UI: Adjust your home screen layout, themes, and wallpapers to suit your style. Custom ROMs often offer enhanced customization options compared to stock firmware.
• Set Up Security Features: Reconfigure security settings such as fingerprint, face unlock, or PIN/password. It’s crucial to secure your device after flashing, especially if you’ve installed a custom ROM that might not include Google’s security features by default.

6. Custom ROMs and the OPPO A72: A Brief Overview

One of the main reasons users flash their devices is to install custom ROMs. Custom ROMs can bring a new life to your OPPO A72, offering enhanced features, performance tweaks, and a unique user experience. Let’s explore some of the popular custom ROMs available for the OPPO A72 and their features.

6.1 LineageOS

LineageOS is one of the most popular custom ROMs globally, known for its stability and near-stock Android experience. It provides regular updates, improved performance, and a cleaner UI compared to OPPO’s ColorOS. Key features include:

• Enhanced Privacy: LineageOS offers better control over app permissions and privacy settings.
• Customization: Users can tweak the UI extensively, including the status bar, lock screen, and home screen.
• Performance Optimization: The ROM is optimized for smooth performance, reducing bloatware, and unnecessary background processes.

6.2 Pixel Experience

Pixel Experience is designed to replicate the experience found on Google’s Pixel devices. It brings the look and feel of pure Android, along with Google’s exclusive features:

• Google Integration: Deep integration with Google services, including the latest Google Assistant and Pixel-exclusive apps.
• Fluid User Interface: Smooth transitions, animations, and the latest Android features straight from Google’s design.
• Regular Updates: Pixel Experience is regularly updated to include the latest security patches and Android versions.

6.3 Resurrection Remix

Resurrection Remix is a feature-rich ROM that combines elements from several popular ROMs, including LineageOS, OmniROM, and Paranoid Android:

• Extensive Customization: Every aspect of the UI can be customized, from the navigation bar to the lock screen.
• Performance Tweaks: Resurrection Remix includes various performance tweaks that can improve battery life and speed.
• Advanced Features: Additional features like gesture controls, screen-off gestures, and an advanced power menu are part of the package.

7. Troubleshooting Common Flashing Issues

Even with careful preparation, flashing can sometimes result in issues. Here are some common problems and how to troubleshoot them:

7.1 Boot Loop

A boot loop occurs when the device gets stuck in the startup process and continually reboots:

• Solution: Boot into Recovery Mode (usually by holding Volume Down + Power) and perform a factory reset. If you’re using a custom recovery like TWRP, you can also try wiping the cache and Dalvik cache.

7.2 Device Not Recognized by PC

Sometimes, your PC may not recognize your OPPO A72, preventing the flashing process:

• Solution: Ensure that the correct USB drivers are installed. Try using a different USB cable or port. If using QFIL or Fastboot, ensure the device is in the correct mode (EDL for QFIL or Fastboot mode).

7.3 Stuck on Boot Logo

If your device gets stuck on the boot logo after flashing:

• Solution: This may occur if the firmware or ROM isn’t compatible with your device. Reboot into Recovery Mode and try flashing a different firmware or restoring a backup.

7.4 Incomplete Flashing Process

If the flashing process stops midway or fails to complete:

• Solution: Check the integrity of the firmware or ROM file. Redownload it if necessary and ensure there’s no interruption during the flashing process (e.g., a loose USB connection).

8. Conclusion: Is Flashing the OPPO A72 Worth It?

Flashing your OPPO A72 can significantly enhance your user experience, offering customization, performance improvements, and the ability to breathe new life into your device. However, it’s not without risks, and it’s essential to weigh the benefits against potential downsides such as voiding your warranty or bricking your device.

For tech-savvy users and those familiar with Android’s ecosystem, flashing can be a rewarding experience, allowing for greater control over the device. Custom ROMs like LineageOS, Pixel Experience, and Resurrection Remix offer unique features that can vastly improve how you interact with your phone.

However, for those less experienced, the process might be daunting. The risks involved, particularly the possibility of bricking your device, can outweigh the benefits. If you’re uncertain, consider whether the stock firmware already meets your needs or explore safer alternatives like rooting without flashing or using third-party launchers for customization.

Ultimately, the decision to flash your OPPO A72 should be based on your comfort level with technology, your specific needs, and your willingness to accept the potential risks. If you choose to proceed, ensure you’re well-prepared, follow the steps carefully, and always have a backup plan in place. With the right approach, flashing can transform your OPPO A72 into a device that perfectly suits your preferences and demands.