mtk-su works by manipulating kernel memory. If other applications are heavily using the processor or locking certain memory regions, the exploit may fail to write the necessary data.
Despite its age, KingRoot remains functional in 2025 on many MediaTek devices. It supports Android versions up to Android 15 and achieves success rates above 80% on MediaTek chipsets. As a one-click solution, KingRoot requires no bootloader unlocking and operates entirely on the device without PC connection.
The causes of this error can vary but might include: mtk-su failed critical init step 3
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Some users have reported success using different versions of the mtk-su binary. Check XDA threads for the latest available versions, particularly builds that may have been updated to support slightly newer firmware. Version 23 was known to work up to “OS 5.6.4.0 build 636558520”. mtk-su works by manipulating kernel memory
If the patch is later than mid-2020, mtk-su will likely not work. 4. Use adb to Directly Execute the Binary
When the exploit fails at step 3, it indicates that mtk-su can’t successfully establish the necessary communication channel with the MediaTek Command Queue driver, which is the core vulnerability vector the tool depends on. It supports Android versions up to Android 15
If you continue to see "Step 3" or "Step 4" failures after verifying these steps, the exploit is likely on your current firmware. In these cases, your only option is typically a hardware-based "brick-and-short" method (if available for your model) to unlock the bootloader via XDA Developers guides .