Zenfone 9 Unlock Bootloader

The Verdict: For the average user, no. Losing Widevine L1 and Google Pay is too steep a price for features you might never use.

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.

If you decide to proceed, follow this guide slowly, double-check every command, and accept the consequences. You are now the master of your hardware.

Have you successfully unlocked your Zenfone 9? Let us know in the comments which custom ROM you flashed.

Disclaimer: This guide is for educational purposes. Unlocking your bootloader may irreversibly damage your device or void your warranty. The author and publisher are not responsible for bricked devices, lost data, or nuclear wars. Proceed at your own risk.

As of May 2026, the status of the Zenfone 9 bootloader unlock is a critical point of frustration for the enthusiast community. While the phone was initially launched with a dedicated unlock tool, ASUS has since discontinued official support, leaving users with very few options for custom ROM installation. Current Official Status (May 2026)

ASUS has officially discontinued the Bootloader Unlock Tool for all mobile devices, including the

Maintenance "Ghosting": Starting in May 2023, ASUS claimed the unlock servers were down for "maintenance" and would return in Q3 2023.

The Final Decision: In late 2025, ASUS confirmed that for models released in 2023 or earlier, the tool is permanently discontinued due to "stability considerations".

Paid Service Contradiction: There have been reports of ASUS offering to unlock bootloaders for a fee (approx. $200 USD/185 EUR) at official service centers in some regions, though this is not a universally available or widely supported program. The Challenges of Unofficial Unlocking Because the

requires communication with an ASUS verification server to complete the unlock process via its APK, "offline" or standard fastboot flashing unlock commands typically do not work.

Server Dependency: The official Zenfone 9 Unlock Device App requires an active connection to dm.asus.com/unlock/register.

Anti-Rollback & Patches: ASUS released firmware (specifically version 33.0804.2060.189 and later) that actively patches unofficial exploits and prevents firmware downgrading. zenfone 9 unlock bootloader

Warranty and Security: Unlocking the bootloader (if successful) still results in a permanent loss of warranty and may cause the device to fail Play Integrity or SafetyNet checks, affecting banking apps. Attempting the Unlock (Legacy Method)

If you are on an older, unpatched firmware and want to check if the servers are reachable, the general process remains:

when will the bootloader unlocking tool be back in... - Page 2 - ASUS

The Quest for Customization

I had just unwrapped my brand new Zenfone 9, and I was excited to explore its features. As a tech enthusiast, I loved the idea of customizing my device to its full potential. But, I knew that to do that, I needed to unlock the bootloader.

I had heard that unlocking the bootloader could be a complex process, but I was determined to take on the challenge. I began by searching online for tutorials and guides specific to the Zenfone 9. After hours of research, I stumbled upon a reliable forum thread that outlined the steps.

The process required me to enable Developer Options on my device, which I did by going to Settings > About phone > Build number and tapping on it seven times. Then, I had to enable OEM Unlocking by going to Settings > Developer Options > OEM Unlocking and toggling it on.

Next, I had to install the Android Debug Bridge (ADB) on my computer and connect my Zenfone 9 to it via USB. I followed the commands to boot my device into Fastboot mode, where I would be able to unlock the bootloader.

The moment of truth had arrived. I typed in the command fastboot oem unlock and waited for the response. The device screen flickered, and a warning message appeared, cautioning me about the risks of unlocking the bootloader. I carefully read through the message and confirmed that I wanted to proceed.

The device then prompted me to enter a code, which I had to obtain from the ASUS website. I filled out the required information, including my device's serial number and IMEI, and submitted the request. After a few minutes, I received an email with the unlock code.

I copied the code and pasted it into the command prompt, and then pressed Enter. The device screen went blank for a few seconds before displaying a confirmation message: "Unlocking bootloader succeeded!"

I had done it! My Zenfone 9's bootloader was now unlocked, and I was one step closer to customizing my device to my heart's content. I couldn't wait to explore the world of custom ROMs, kernels, and mods. The Verdict: For the average user, no

The Aftermath

With my bootloader unlocked, I felt a sense of liberation. I could now install TWRP, a custom recovery, and flash custom ROMs like LineageOS or Paranoid Android. I could also root my device, which would give me superuser access to modify system files and settings.

However, I was also aware of the risks involved. Unlocking the bootloader had voided my warranty, and I had to be careful not to brick my device. I made sure to follow best practices and take regular backups of my data.

The journey had been worth it, though. I had gained a deeper understanding of the Android ecosystem and had taken control of my device. The Zenfone 9 was now mine to tinker with, and I was excited to see what the future held.

The Zenfone 9 is one of the last unlockable compact flagships, but ASUS has made the process deliberately painful with permanent DRM degradation. It's possible, but you'll pay a high media/security feature price.

Unlocking the bootloader on an ASUS Zenfone 9 is currently no longer supported

through official channels. While ASUS initially released an official unlock tool (in the form of an APK) in 2022, they have since removed it and shut down the necessary backend servers. Current Status (April 2026) Official Tool Unavailable

: ASUS removed the Zenfone 9 bootloader unlock tool and disabled the server-side registration process (dm.asus.com/unlock/register) around August 2023. Warranty Warning

: If you manage to unlock the device, ASUS historically considers the warranty voided. Factory Reset

: Any successful unlock attempt will trigger a mandatory factory reset, erasing all local data. Unofficial & Paid Alternatives

Because the official free method is dead, users have found limited, risky workarounds: Paid Remote Unlock Service

: 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 Disclaimer: This guide is for educational purposes

previously found exploits for certain firmware versions, but ASUS has released updates specifically to patch these "holes" and prevent firmware downgrading to block these methods. General Unlock Procedure (If a method is found)

If an unofficial tool or a restored official tool becomes available, the standard process for ASUS devices typically involves: Preparation

: Backing up all data and ensuring the battery is above 50%. Developer Options : Enabling USB Debugging OEM Unlocking within the phone's hidden Developer Options menu. Unlock App

: Installing a model-specific APK (often called "Unlock Device Tool") provided by the manufacturer. Verification

: Running the app, which communicates with ASUS servers to verify the device's IMEI and permanently unlock the bootloader. ASUS - ZenTalk : Unlocking the bootloader disables OTA (Over-the-Air) updates

, meaning you must manually flash future security patches and system updates. ASUS - ZenTalk specific firmware version is compatible with current community exploits?

ASUS does not provide an official tool to relock the bootloader. Attempting to lock it manually via fastboot oem lock will likely corrupt your device signature, resulting in a hard brick. If you need to return to factory state, you must flash the full stock raw firmware using ASUS’s Flash Tool, but the bootloader status may remain "unlocked."

Some Zenfone 9 units require an unofficial firehose loader + fastboot oem asus-csc_lk commands. This method:

Not detailed here unless you confirm you’re OK with advanced, risky steps.

The ASUS Zenfone 9 is a compact powerhouse. It’s one of the last few flagships that fits comfortably in one hand, featuring a headphone jack, a side-mounted fingerprint sensor, and near-stock Android. However, for enthusiasts, developers, and privacy advocates, the true potential of the Zenfone 9 remains locked behind a digital door—the bootloader.

Unlocking the bootloader is the first and most critical step toward rooting your device, installing custom ROMs like LineageOS, or applying low-level system tweaks. But unlike Google Pixels or OnePlus devices, ASUS has a specific, somewhat hidden process for the Zenfone 9.

In this guide, we will walk you through everything you need to know about unlocking the bootloader on the Zenfone 9: the risks, the prerequisites, the step-by-step procedure, and what to do after you succeed.