Warning: Unlocking the bootloader will initiate a factory reset. Transfer all of your personal data to your computer before continuing with this guide.

Requirements:

Minimal ADB & Fastboot v1.4 Windows InstallerOfficial Lenovo USB Device Driver v1.1.21TWRP v3.0.1 for the TB3-850FADB Driver Installer for WindowsSuperSU v2.79-SR3 flashable zip

All necessary files can be obtained HERE

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