@johndoe Thanks for this great answer.
I just succeeded in downgrading a Pixel 3a (not XL) following your (linked) instructions, just replaced bonito
by sargo
, where possible.
This answer is to give other users with the same problems a heads up.
I used Ubuntu 24.04 on my host computer and a USB 2 port. With USB 3 the fastboot flash
commands always failed. I used the flash-all.sh
instead of the Android Flash Tool.
Now I'm going to install Ubuntu Touch on the phone