Your Lenovo Tab M8 HD (TB8505F) is powered by a . This is crucial because it determines the tools you can use. Many rooting methods for this device rely on MediaTek-specific software like SP Flash Tool (a low-level firmware flashing utility for MTK devices) and MTKClient (an open-source tool that can interface with the device in BROM mode to unlock the bootloader or flash partitions). Keep this in mind as you follow the guides below.

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Open on your tablet and navigate down to System -> About Tablet .

[Tablet Settings] ➔ [About Tablet] ➔ Tap Build Number (7x) ➔ [Developer Options] ➔ Enable USB Debugging & OEM Unlocking