How to Downgrade Honor 9 (STF-AL10) from EMUI 9/9.1.0 to EMUI 8.0 – Step-by-Step Guide

Introduction

If you own an Honor 9 (model STF-AL10) and recently upgraded to EMUI 9 or EMUI 9.1.0, you may have noticed performance issues, reduced battery life, or compatibility problems with some apps. Fortunately, you can downgrade your Honor 9 to EMUI 8.0 for better stability and smooth performance.

Honor 9 (STF-AL10) 

What is EMUI Downgrade?

Downgrading EMUI means reverting your Honor phone’s firmware from a newer version (like EMUI 9 or 9.1) back to an older, more stable version (like EMUI 8.0). This is especially useful for users who experience bugs, performance drops, or lack of features after an update.

Key Features of EMUI 8.0

• Faster performance: Optimized RAM and system management
• Longer battery life: Efficient background app control
• Simple UI: Clean, user-friendly interface
• App compatibility: Supports older apps better than EMUI 9
• Improved system stability: Fewer crashes and freezes

How to Use This Downgrade Method (Step-by-Step in Bullet Points)

• Backup your data: Use Huawei Backup or Google Drive to save your contacts, photos, and files.
• Charge your device: Ensure your phone is at least 60% charged to avoid interruptions.
• Download the required firmware: Get the official EMUI 8.0 rollback and full firmware files.
• Install Huawei HiSuite on PC: Required for flashing the rollback firmware.
• Enable USB Debugging: Go to Settings > About phone > Tap Build Number 7 times > Developer options > Enable USB Debugging.
• Connect your phone to PC: Use a working USB cable.
• Use HiSuite to install rollback package: This reverts EMUI 9 to an intermediate version.
• Manually install EMUI 8.0 full package: Place update.app file in a ‘dload’ folder on microSD > Reboot to recovery > Install via external storage.

How to Download the Downgrade Firmware 

• Visit official Huawei Firmware websites like:
• Firmware Finder by Team MT
• XDA Developers Forums
• Search for STF-AL10 EMUI 8.0 firmware
• Download the Rollback Package: e.g., STF-AL10 9.1.0.XXX → 8.0.0.XXX
• Download Full EMUI 8.0 Package: Usually in .zip or .app format
• Extract and place firmware in SD card: Folder path should be dload/update.app

Supported Devices

• Honor 9 (STF-AL10) China Variant
• EMUI 9 / 9.1 pre-installed devices
• Bootloader unlocked (optional but recommended)
• Devices with HiSuite compatibility

Conclusion

Downgrading your Honor 9 (STF-AL10) from EMUI 9/9.1.0 to EMUI 8.0 can restore speed, stability, and longer battery life, especially if the newer firmware has caused issues. By following this step-by-step guide carefully and using the correct files, you can safely bring your device back to a more reliable EMUI version.

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