Zenfone 9 Unlock Bootloader Page
: ASUS disabled its official Bootloader Unlock Tool servers in mid-2023. Since the tool required server-side verification to generate an unlock key, the app no longer functions for users. Paid Service Alternative
: The free, downloadable unlock tool remains officially retired.
(Mac/Linux can be used, but this guide uses Windows). USB Cable: The original cable is recommended.
Because ASUS shifted away from a simple point-and-click APK utility for newer Android versions, the process heavily relies on standard fastboot commands and the official ASUS unlock client. Step 1: Connect to the PC zenfone 9 unlock bootloader
Follow the on-screen instructions to accept the terms and conditions. Tap the "Unlock" button.
Modifying a device at the bootloader level introduces several critical changes to its operation and security posture:
While some regions have consumer laws, generally, unlocking the bootloader voids your warranty with Asus. : ASUS disabled its official Bootloader Unlock Tool
Take note of the strings inside the brackets (without the brackets). You will use these to create the swVer parameter in the next step.
Copy all important files to a computer or cloud storage. ASUS Zenfone 9 : With at least 50% battery. USB Cable: The original ASUS USB-C cable is recommended. Computer: A PC with Windows, Linux, or macOS. ADB & Fastboot: Download the latest Platform-Tools from Google.
: In late 2025, ASUS officially confirmed that the Bootloader Unlock Tool for older models, including the , has been discontinued due to "stability considerations". (Mac/Linux can be used, but this guide uses Windows)
Unlocking the bootloader is the gateway to . On a Zenfone 9, root access transforms the phone.
: Unlocking the bootloader typically voids your manufacturer's warranty immediately. Security Risks
Install the app. (You may need to allow installation from unknown sources). Open the .
Upon reboot, you will see a warning message at the top of the screen during boot, stating that the bootloader is unlocked. Frequently Asked Questions (FAQ) Can I re-lock the bootloader?
If you are planning to modify your system software, tell me: Do you plan to or flash a custom ROM ?
