AXUtil and Powershell

just to remeber the right syntax:

Import Model:
axutil import /file:abc.axmodel /conflict:push /config:AOSname

Delete Layer:
axutil delete /layer:usr /config:AOSname
instead of /config: it is possible to use the dbName /db:DBname 

PowerShell
Uninstall-AXModel -Database "NameOfDB" -Model "NameOfModel"