Pixel 7 installation seems to have worked via adb/sideload - now ' device is corrupt'

/e/OS Devices Google
2

So two problems, as you sound unhappy about the second … is it the same as this Murena Pixel 7 yellow triangle on booting.

Maybe there is room for misunderstanding …

  1. Select Factory reset
  2. Select Format data / Factory reset option
  3. Next screen will display a warning that this action cannot be undone
  4. Select Format data to proceed or Cancel if you want to go back
  5. If you selected Format data, the format process will complete.

The 5 points are mostly to explain the navigation to the one task Format data. This is an essential step and causes a bootloop if the format does not actually happen and complete.

Is it possible that the Recovery you saw was not e-Recovery?

Please compare with my reply here No "Apply Update" entry in the "recovery mode" menu - #2 by aibd