Can't update HuskyLens firmware on Mac

Hoping to get help updating the firmware on my new HuskyLens. I've installed the packages but when I run sudo python3 kflash.py -b 2000000 HUSKYLENSWithModelV0.4.6Stable.kfpkg

I get this error: 

/Library/Developer/CommandLineTools/usr/bin/python3: can't open file 'kflash.py': [Errno 1] Operation not permitted

Any suggestions? Tx!