Installing GrapheneOS on a Pixel 4a

By Dan Aukes

Instructions derived from https://grapheneos.org/install/cli

Download Developer Tools

sudo apt install -y android-sdk-platform-tools-common
sudo apt install -y signify-openbsd
echo "alias signify=signify-openbsd" >> ~/.bashrc
sudo apt remove adb 
mkdir ~/adb
cd ~/adb
sudo apt install -y libarchive-tools
curl -O https://dl.google.com/android/repository/platform-tools_r33.0.3-linux.zip
echo 'ab885c20f1a9cb528eb145b9208f53540efa3d26258ac3ce4363570a0846f8f7  platform-tools_r33.0.3-linux.zip' | sha256sum -c
bsdtar xvf platform-tools_r33.0.3-linux.zip
echo "export PATH=\$PATH:/home/danaukes/adb/platform-tools" >> ~/.bashrc
which fastboot
fastboot --version

Download graphene

go to https://grapheneos.org/releases#bramble-stable

wget https://releases.grapheneos.org/bramble-factory-2022071300.zip.sig
wget https://releases.grapheneos.org/bramble-factory-2022071300.zip

Prep Phone

  1. Turn on developer mode
  2. go to settings –> “about phone”
  3. press “build number” until developer mode is enabled
  4. exit out of settings so that the new menu can load
  5. go back to settings –> system –> developer options
  6. enable “OEM unlocking”
  7. restart phone in bootloader mode by restarting and holding the “volume down” button until the fastboot screen starts up.
cd ~/adb
wget https://releases.grapheneos.org/factory.pub
cat factory.pub 
signify-bsd -Cqp factory.pub -x bramble-factory-2022071300.zip.sig  && echo verified
bsdtar xvf bramble-factory-2022071300.zip
cd bramble-factory-2022071300/
fastboot flashing unlock
./flash-all.sh 
fastboot flashing lock

Next Steps

VPN Issue

  1. After installing tailscale, turn off blocking in vpn settings

https://github.com/GrapheneOS/os-issue-tracker/issues/183

To return to the original

other resources