1. Download the pixel of twrp image and zip, while two to download
https://twrp.me/
1) twrp-3.2.1-0-sailfish.img
2) twrp-pixel-installer-sailfish-3.2.1-0.zip
2. twrp-pixel-installer-sailfish-3.2.1-0.zip push to cell phones
adb push twrp-pixel-installer-sailfish-3.2.1-0.zip /sdcard/
3. Enter the temporary recovery mode twrp
adb reboot bootloader fastboot mode to enter
sudo fastboot boot twrp-3.2.1-0-sailfish.img
Into twrp mode, select the installation twrp-pixel-installer-sailfish-3.2.1-0.zip
4. Installation Magisk
Download https://forum.xda-developers.com/apps/magisk/beta-magisk-v13-0-0980cb6-t3618589
1) Magic-v15.4 (1540) .zip
5. Installation Magisk
1) adb push Magisk-v15.4\(1540\).zip /sdcard/
2) adb reboot bootloader fastboot into selection mode, select install zip
Installation restart the phone
Note: pixel SuperSu seems to have to die, even if the installation was successful go twrp prompt, then reboot did not work properly.
