Kingroot 4.8.1 ~upd~ -

Devices like the Samsung Galaxy S4, HTC One M8, LG G3, and older MediaTek-based phones often fail with modern rooting tools (Magisk, SuperSU). Kingroot 4.8.1 was optimized for the exploits of that era, making it more successful on unpatched, older firmware.

The “Unroot” button in version 4.8.1 is known to be buggy. If you need to unroot, you may have to flash a stock ROM. kingroot 4.8.1