Troubleshooting: If the device says “Unknown” or “Offline,” restart ADB server using the “Kill ADB” and “Restart ADB” buttons within the tool.

No tool is perfect. v2.5.3 was last updated in late 2014. Consequently:

After a full ROM flash via SP Flash Tool, your IMEI shows "Invalid" or "Null."

This version utilizes specific MTK kernel exploits to gain root access on devices where the bootloader cannot be officially unlocked. It bypasses standard security restrictions to inject root permissions directly.

Given that MTK Droid Tools v2.5.3 is no longer updated (final release circa 2015), consider these for newer devices:

This is the most critical feature. Always back up before modifying anything.