The story of the ASUS Zenfone 9 bootloader is less of a technical guide and more of a cautionary tale about the shifting landscape of smartphone ownership. The Initial Promise
Congratulations! When your phone boots to the setup wizard, the bootloader is unlocked.
For the enthusiast, absolutely yes. The Zenfone 9 is one of the last great small phones for modding. With an unlocked bootloader, you can extend its lifespan beyond ASUS’s 2-3 years of updates, install de-Google'd ROMs like GrapheneOS (community ports exist), or simply remove bloatware with root.
: Reports from late 2024 and 2025 indicate that ASUS may offer a manual unlock service through their repair centers for a fee (reportedly around $200 / €185 Unofficial Exploits : Community developers on XDA Developers
This paper is intended for educational and research purposes. Unlocking your bootloader may permanently compromise device security and functionality.