Unlock Bootloader, Install LineageOS ,TWRP and Root Essential PH-1

Fastboot mode

Put your Essential Phone into fastboot mode by doing either of the following:

• Use the ADB tool packaged above to run the command:

 adb reboot bootloader 

Reboot your phone while holding the Volume-down button

Enable unlocking and Unlock your bootloader

Enable unlocking

Find the option: OEM Unlocking and turn it on

Unlock your bootloader

Run the command:

adb reboot bootloader
fastboot flashing unlock

• Press the Volume-down button to navigate to the YES option, then press the Power button to confirm

Flash the TWRP into essential

NMI81C-TWRP.img下载

magisk下载

adb reboot bootloader
或者手工进入

输入以下指令
fastboot devices -l
若出来一串序列号，说明安卓设备已连接

刷入TWRP

成功
fastboot flash boot   NMI81C-TWRP.img


失败 老的用法 
fastboot flash recovery twrp-mata_2.im



Installing  Magisk from recovery
Wipe the device
In the TWRP Home menu, select Wipe > Advanced Wipe. Select Dalvik / ART Cache, System, Data, and Cache. Do not select the Internal Storage otherwise you will lose the data. Then Swipe to Wipe.
有一次wifi打不开居然是这个原因


可能要用的命令
 adb shell twrp sideload
 adb sideload Magisk-v15.3.zip
 

参考

How to Root the Essential Phone (PH-1) using Magisk

https://www.essential.com/developer/current-builds

Nexus5刷机

Unlock Bootloader, Install TWRP and Root Essential PH-1