For those of you who have installed a new custom ROM and wanted to change to another ROM, you will probably have noticed that most custom ROMs now included CyanogenMod recovery, which overwrites your existing TWRP recovery (that you probably installed while rooting). Well, to install TWRP permanently after installing a custom ROM, you simply need to flash TWRP recovery ZIP after installing the ROM. That way, you can install new ROMs in the future without having to re-install TWRP recovery using your computer.
In this tutorial, I will show you how to re-install TWRP recovery and also how to keep TWRP permanently after installing a custom ROM for Pixel or Pixel XL.
Step 1. Power off your Pixel then hold down Volume Down and Power buttons together until you get into “fastboot” mode like shown below:
Step 2. Download fastboot.zip and also TWRP IMG and ZIP files for your Pixel or Pixel XL. Unzip fastboot.zip into a directory called “fastboot” and copy the TWRP IMG file into the folder.
Step 3. Open a command prompt for Windows or terminal for Mac/Linux then type:
fastboot boot twrp-3.0.2-0-RC1-fastboot-sailfish.img
For Pixel XL:
fastboot boot twrp-3.0.2-0-RC1-fastboot-marlin.img
chmod 755 *
./fastboot-mac boot twrp-3.0.2-0-RC1-fastboot-sailfish.img
For Pixel XL:
./fastboot-mac boot twrp-3.0.2-0-RC1-fastboot-marlin.img
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