Codename grouper
Vendor: Google
Type: Tablet
Also known as: grouper
Platform: NVIDIA Tegra 3
CPU: 1.3 GHz quad-core Cortex A9
GPU: Nvidia GeForce ULP
RAM: 1 GB
Bluetooth: 3.0
Wi-Fi: 802.11 b/g/n 2.4GHz
GSM freq: not supported
LTE freq: not supported
Main camera: 1.2 MP
Secondary camera: not supported
Peripherals: accelerometer / gyroscope / proximity sensor / digital compass / GPS / magnometer / microphone / NF

https://www.unlegacy-android.org/projects/unlegacy-android/wiki/Grouper_info

PostmarketOS

compile

dpavlin@klin:/klin/pmos/pmbootstrap$ pmbootstrap install --android-recovery-zip

pmbootstrap flasher --method=adb sideload

desktop network config

dpavlin@klin:/klin/pmos/pmbootstrap$ grep -A3 usb0 /etc/network/interfaces
allow-hotplug usb0
iface usb0 inet static
# postmarket os
	address 172.16.42.2
	netmask 255.255.255.0

dpavlin@klin:/klin/pmos/pmbootstrap$ grep -A5 pmos ~/.ssh/config
Host pmos
    HostName 172.16.42.1
    UserKnownHostsFile /dev/null
    StrictHostKeyChecking=no

reboot-mode to reboot into recovery

https://gitlab.com/postmarketOS/pmaports/-/merge_requests/442