Hi - could someone give me a detailed hint on how to change the model in Google
Collab?. I entered the code !whisper --help as it was in the instructions from Truc1979
but they can't change anything.

Hello,
At step Four, replace the line by:

!whisper "MarcoEnd.mp3" --model large-v2 --language Italian

Of course, replace "MarcoEnd.mp3" by your file name, and "Italian" by "English" or whatever language it is.