General Fastboot Commands and Processes
From JCRDoc
(WIP)
Fastboot General info
Platform-Tools download link: https://developer.android.com/tools/releases/platform-tools
General Commands
Check platform tools version
adb --version
or
fastboot --version
Format User Data
fastboot -w
Update with fastboot zip
fastboot update 'path to zip'
Downgrade Bootloader (pixel devices)
Note: This may not work for every phone. This will work for pixel devices.
First you will need to download the stock image for the update you are looking for from here
then, boot into recovery mode and wipe data.
next follow the below commands one at a time.
fastboot flash bootloader 'path to bootloader img' --slot all
fastboot reboot bootloader
fastboot flash radio 'path to radio img' --slot all
you can now flash the fastboot img or other that requires the bootloader version you just flashed