Asus provides an official bootloader unlock tool for the ZenFone 9—a simple APK that you run on the phone itself. However, there have been reports that Asus temporarily disabled this unlocking mechanism in some firmware versions, so confirm availability for your device.
For enthusiasts looking to extend the life of their device, strip away bloatware, or reclaim privacy, LineageOS remains the gold standard. Here is everything you need to know about the current state, installation, and performance of LineageOS on the Asus Zenfone 9. asus zenfone 9 lineage os
The device will automatically reboot and perform a factory reset. Step 2: Enable USB Debugging Asus provides an official bootloader unlock tool for
Installing on the ASUS Zenfone 9 Go to product viewer dialog for this item. Here is everything you need to know about
: ASUS officially disabled its bootloader unlock tool for the Zenfone 9 around August 2023. This tool is a prerequisite for installing custom ROMs like LineageOS. While an unofficial method briefly worked, ASUS released firmware updates (e.g., version 33.0804.2060.189) specifically to block these workarounds and prevent firmware downgrades. Community ROMs
Once in recovery mode:
From theming to button customization, LineageOS gives you granular control over your user interface. LineageOS 21 on (Android 14) As of mid-2026, the (codename: