Information from Wetzlar about the hot/stuck pixel phenomenon of the Leica Q2 Monochrom at higher ISO values:
Leica has informed us that the problem has been identified and they are working on a software solution.
We have the following important information for you:
It is not necessary to send the camera in
A firmware update will probably be available in a few weeks with which a manual pixel mapping can be done.
So a little more patience please, solution is on its way ..