While trying to use ADB on a Linux Computer, I received the following error from “adb devices”
no permissions (user in plugdev group; are your udev rules wrong?);
Not exactly sure what causes the above error, but the information in the following Stack Exchange link was helpful.
I was able to get around the issue by putting the USB option to “File Transfer Mode” from the notifications menu
Restoring a Pixel to the factory image is a pretty straight forward operation if you are familiar with fastboot and adb. This guide assumes you have fastboot already installed and setup in your user path. If not you can refer to the following link for more information.
WARNING – THESE STEPS WILL DELETE ALL USER DATA OFF THE DEVICE.
https://developers.google.com/android/images#instructions
Go to the following link and download the Factory Image for your device
https://developers.google.com/android/images
Extract the file and then open a terminal or command prompt in that directory.
You can do this with “adb reboot recovery” or with the volume key to boot into the Android boot menu.
On Windows you can flash the firmware with
flash-all.bat
Or on Linux
./flash-all.sh
Should take it a couple of minutes to complete.
Next we can lock bootloader with
fastboot flashing lockYou will need to confirm the lock on your phone.
Go to https://twrp.me/Devices and download the correct version TWRP for your device.
Boot into boot loader menu
Plug you phone into a computer that has fastboot installed and run
sudo fastboot boot Downloads/twrp-3.3.0-0-sailfish.img
Note you may need to unlock your boot loader.
Your phone should now boot up into TWRP
Swipe to Allow Modifications
Select advanced
Then hit ADB Sideload.
Swipe to start the sideload and then sideload from your computer
adb sideload image.zip
More detailed explaination
https://www.cyanogenmods.org/adb-sideload-twrp/
On the phone enable Developer options. More info here.
Find the “OEM unlocking” button and enable.
Reboot phone to bootloader.
Plug phone into computer and computer run
sudo fastboot flashing unlock
Use the buttons on the phone to select and enable unlocking.
Download twrp from here
Download LineageOS 17 from here
Boot phone to boot menu then fastboot twrp
sudo fastboot boot Downloads/twrp-3.3.0-0-sailfish.img
Wipe to factory defaults
Side load LineageOS Android 10 from the Advanced page on TWRP
adb sideload Downloads/lineage-17.0-withMTG-20191217-UNOFFICIAL-sailfish.zip
Reboot and setup.