Introduction

I recently got a new Pixel and had to go through the process of flashing it again, so I wanted to take the chance to make a companion/alternative guide to the official CalyxOS docs with some videos of the process to help guide you through it.

Note that this guide assumes the following:

  • You already have a supported device
  • You are running Linux (this guide is specifically done on Pop_OS! 21.10, but should be applicable to most distributions)

If you have any further questions or get stuck following this guide, refer to the official documentation:

Download and verify the necessary files

  1. Create a new directory to house the files we will need

    • Commands:

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      mkdir ~/Downloads/calyxos
      cd ~/Downloads/calyxos
      
  2. Download the zip and signatures for your specific phone from https://calyxos.org/install/

    • Note: The file name “oriole-factory-22301010.zip” may be different for you depending on your phone and the version of CalyxOS you are installing.

    • Expected directory structure:

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      ~/Downloads/calyxos ❯ tree
      .
      ├── device-flasher.linux
      ├── oriole-factory-22301010.zip
      └── oriole-factory-22301010.zip.minisig
      
  3. Download the necessary signing files from https://calyxos.org/install/verify/

    • Commands:

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      wget https://release.calyxinstitute.org/minisign.pub
      wget https://release.calyxinstitute.org/minisign.pub.sig
      
    • Expected directory structure:

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      ~/Downloads/calyxos took 5s ❯ tree
      .
      ├── device-flasher.linux
      ├── minisign.pub
      ├── minisign.pub.sig
      ├── oriole-factory-22301010.zip
      └── oriole-factory-22301010.zip.minisig
      
  4. Verify the zip file using GPG and minisign

    • Commands:

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      # Compare hash of device-flasher.linux to the digest listed on the install page for your device
      sha256sum device-flasher.linux
      
      # Import the GPG key used to sign the minisign signatures
      gpg --search-keys "BC2C B9C4 993C 086F FDAD 8D20 5905 C9C7 4693 488B"
      
      # Verify the minisign signatures
      gpg --verify minisign.pub.sig minisign.pub
      
      # Download and install minisign
      wget https://github.com/jedisct1/minisign/releases/download/0.10/minisign-0.10-linux.tar.gz
      tar xvf minisign-0.10-linux.tar.gz
      sudo cp minisign-0.10-linux/x86_64/minisign /usr/local/bin
      rm -rf minisign*
      
      # Replace the file name "oriole-factory-22301010.zip" with your own downloaded file above
      minisign -Vm oriole-factory-22301010.zip -p minisign.pub
      
    • Expected output:

Install CalyxOS

  1. Enable developer options

    • This step allows you to toggle OEM unlocking
  2. Enable OEM unlocking

    • This step allows you to unlock (and then re-lock) the bootloader of the phone in order to flash CalyxOS
      • Note: If this option is grayed out, you may need to connect to WiFi before you can enable OEM unlocking
  3. Allow the device-flasher script to be executed and run it, following all instructions in your terminal

    • Commands:

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      chmod +x device-flasher.linux
      ./device-flasher.linux
      
    • Expected output (played back at double speed):

  4. Set up your new, de-Googled, privacy-preserving, and data-sovereign phone as you prefer!

Conclusion

Thankfully, the process above has been made extremely simple by the hard work of the Calyx Institute and CalyxOS team.

Please consider donating to the Calyx Institute or becoming a Calyx Institute member to help support their work and bring a privacy-preserving mobile OS to more people like you!

If you have any questions from this post or would like more information on a specific aspect, please reach out via Signal, Matrix, Threema, or email.