Cyril Brulebois <kibi@debian.org> (2023-03-08):
I should be able to share a small(-ish) ISO for you to test, so that
you can check whether touchpad support becomes available. Same story
as before: that'd be just about booting the installer, reaching the
language selection screen, and letting us know whether the touchpad's
working.
Test ISO (without any firmware, just a fresh minimal installer build)
available here for you to check whether that helps the touchpad become
alive:
https://people.debian.org/~kibi/bug-1032136/