Historically, Asus provided an official bootloader unlock APK. Ensure you check the official X018D/AI2202 community threads on XDA Developers for the most up-to-date unlocking methodology, as Asus infrastructure changes can affect the utility of the official app. Once unlocked, your device will display a warning screen upon every boot. Step 2: Enable Developer Options
. Without an unlocked bootloader, installing LineageOS or any custom ROM is impossible. Key Considerations for
Preparation checklist (before flashing)
If you plan to install this, be aware of the specific unlocking process for ASUS devices:
In your terminal window, flash the custom recovery components by executing the following commands sequentially: fastboot flash boot boot.img Use code with caution. fastboot flash vendor_boot vendor_boot.img Use code with caution. asus zenfone 9 lineage os
Select and confirm the choice. This clears the encrypted stock partitions. Return to the main menu. Step 5: Sideload the ROM and GApps On your phone, select Apply Update then Apply from ADB .
adb sideload lineage-21.0-xxxxxxxx-nightly-AI2202-signed.zip Use code with caution. Step 2: Enable Developer Options
Download the official Asus Unlock Device App APK directly from the Asus support website.
Unlocking the Asus Zenfone 9: The Ultimate LineageOS Installation and Review Guide fastboot flash vendor_boot vendor_boot