: ASUS officially discontinued its bootloader unlock tool for models released in 2023 or earlier, including the Zenfone 9.
: The APK-based unlocking method that users relied on in the past no longer works because ASUS disabled the required activation servers. asus zenfone 9 lineage os
: There have been reports of users being offered paid bootloader unlocking services through official ASUS service centers in some regions (approximately $200), though this is not a globally standardized or consumer-friendly option. Why Install LineageOS on Your Zenfone 9? : ASUS officially discontinued its bootloader unlock tool
As of mid-2026, the Zenfone 9 does not have an LineageOS build. While unofficial builds and GSIs (Generic System Images) have existed in the community, the biggest hurdle for most users is the inability to unlock the device's bootloader— a prerequisite for any custom ROM installation. Why Install LineageOS on Your Zenfone 9