Stuck with new Fairphone 3

[AnotherElk]

@uweweimer

it works.

For users perhaps with the same issue finding this topic later … what worked in the end?

By the way … To deactivate the “30 seconds” screen, if you have ADB working:

@pigpig

If you see the warning that shuts down the phone after the 30 seconds :
adb reboot "dm-verity enforcing"

… works once Android or TWRP are booted.