ML is not installed into the camera, the program resides on the CF or SD card to which the ML program is copied. On the ML website you'll find instructions for installation of ML onto a CF/SD card and *also* instructions for removal of ML from the same card. What Marsu42 was referring to (I believe) is that removal of ML from a CF/SD card is not accomplished by simply deleting the ML files from the card, it must be low-level formatted in the camera (not a card reader). What this also means is that if you wish to run ML on multiple card, it must be installed on each card. I have several with ML installed on which I wrote 'ML' with a marker, and several without ML on which I wrote....nothing. If you've never used ML, you're in for a treat.