I just got my new lab radar, updated the firmware, was able to connect with my Samsung phone, tried it with my .22 rimfire, and wasn't able to get any of the trigger settings to work, went from setting 8 to 5 to 1, so I changed it over to Doppler and it started picking up most of the shots. Haven't tried using it with a centerfire yet. Is the rimfire just not loud enough to trigger it? or do I have to have some optional trigger device to use these settings, or do I need to use the Doppler option to trigger it? Also, haven't yet figured out how to download the data to my computer in a usable format, I'm not very computer savy, and not sure what software is compatable. Any advice or instruction welcome.