Mtk-su Failed Critical Init Step 3 - //free\\

If the output says arm64-v8a , you must use the version of mtk-su .

Android uses SELinux (Security-Enhanced Linux) to enforce mandatory access control. If your device's SELinux policy is set to Enforcing (which is standard), it may stop mtk-su from modifying the necessary system processes. 4. Wrong Version of mtk-su

: Make sure you are running the command from the correct directory (usually /data/local/tmp ) where you have read/write/execute permissions as a shell user.

Check your device’s security patch date in Settings > About Phone . mtk-su failed critical init step 3

At its core, MTK-SU exploited a MediaTek vulnerability (CVE-2020-0069) that affected a vast number of Android devices with firmware releases before 2020. The tool worked on both 32-bit and 64-bit MediaTek systems, making it a versatile solution for temporary root access.

When you see , it specifically means the exploit reached the final setup phase but could not apply the necessary modifications to the kernel’s SELinux security module. As a result, the system blocks the elevated permission request. Common Causes for Step 3 Failure

You will need a computer (Linux or Windows), Python installed, and device-specific filters (like UsbDk drivers). If the output says arm64-v8a , you must

When the program initializes, it runs through sequential internal health checks labeled as "critical init steps." Error Code Phase What it Represents Primary Reason for Failure Platform and Architecture validation. Running 32-bit binaries on 64-bit hardware, or vice versa. Step 3 Environment and Directory Access Initialization.

Ensure you download the latest version of MTK-su from a trusted source. Uninstall any previous versions and then reinstall.

Failure at this stage means the exploit cannot proceed because the kernel or firmware patched the vulnerability, or the device’s security features blocked the operation. At its core, MTK-SU exploited a MediaTek vulnerability

Instead of running exploits inside Android via ADB, use or the BROM Exploit (Kamasis / Bypass) :

Have you managed to get past step 3 on a patched device? Share your experience in the comments or on XDA Developers—the community always benefits from new discovery.

If you see this error, accept that the exploit will not work on your current firmware. Do not download random "updated mtk-su 2025" binaries from sketchy forums; they are almost certainly malware. Your time is better spent investigating the official bootloader unlock process for your device or embracing the limitations of a secure, up-to-date system.

Check for verified boot / AVB / dm-verity