Wrong ZOOM/FOCUS Steps Python examples

Hello, I have followed ArduCAM/PTZ-Camera-Controller instrucctions and It’s working , however I realize zoom and focus do nothing (little motor noise), I see the max value for zoom and focus is 200,So I tried editing focuser.py and change

OPT_ZOOM from 200 to 20000
OPT_FOCUS from 200 to 20000


focus_step  = 50 
zoom_step   = 500

Now it’s working “fine” , I can zoom in/out and focus , please can you tell me what it’s wrong here? maybe I buy a old firmware? I purchased last week at Roboshop (europe)