: Go to Settings > About Phone > Android Security Patch Level . If it is newer than March 2020, this exploit will likely never work on your current firmware.

Confirm that your device is compatible with the MTK SU tool.

To avoid encountering the failed critical init step 3 error in the future, follow these best practices:

Failure at step 3 often indicates:

If your device goes to sleep while the script is running, the script may fail. Keep the screen active and on.

The mtk-su tool be executed from a folder that allows execution, such as /data/local/tmp . If you run it from a standard storage directory, it will fail. Commands:

Typically represents the point where the binary attempts to locate or inject into specific kernel memory layouts or match kernel symbols.

The air in the lab tasted of burnt copper and failure. Dr. Aris Thorne stared at the blinking cursor on his terminal, the words "MTKSU FAILED CRITICAL INIT STEP 3 BEST" mocking him in sterile green phosphor.

Look for an older version of your device's official firmware (Fastboot ROM). Flashing an older version can re-open the exploit path. 4. Adjust Tool Settings (MTK Bypass Tool) If you are using a GUI-based bypass tool alongside mtksu :

The original MTKSU by has been deprecated. The error most commonly appears because you are using a legacy binary that does not support your kernel’s timerfd or userfaultfd structures.

Only consider this if you have exhausted ALL other options. Even then, it is incredibly risky and not recommended for 99% of users. The potential for total device loss is extremely high.

If none of the above steps work, consider trying alternative rooting tools like SP Flash Tool, KingoRoot, or Towelroot.

If you're reading this article, chances are you've encountered the frustrating "MTK SU Failed Critical Init Step 3" error while trying to root your Mediatek (MTK) based Android device. Don't worry; you're not alone. Many users have faced this issue, and we're here to provide you with a detailed guide on how to troubleshoot and resolve the problem.