At the time I'm writing this the stable release is 2.3. Read all the instructions and understand the entire process before you actually do it. Follow the installation instructions to the T.If you want to minimize the risks I recommend the following: The recent 2.3 release has been extremely stable in my experience. I haven't experienced any crashes that didn't clear when removing the battery.

Note that the software does crash from time to time, and sometimes it is necessary to remove the battery to reset the camera. My experience with Magic Lantern on my 60D has been very good, I think the benefits far outweigh the disadvantages and risks. So you always have the choice to run Magic Lantern or not if you keep track of which of your SD cards have Magic Lantern installed and which do not. This is important to know, because if you replace the Magic Lantern SD card with a regular SD card (one that does not have Magic Lantern installed) or no SD card at all, the camera will not find any code to load, so it will just load the stock firmware, and there will be absolutely no trace of Magic Lantern. The bootdisk feature is what enables the camera to load Magic Lantern at boot time. Magic Lantern enables the bootdisk flag in your camera and then installs to the SD card. This flag tells the camera if it should try to load and execute software stored in the SD card. My understanding is that the only change that is done to your camera is to enable the 'bootdisk' flag, which is a very minor change. I think something not everybody understands is the Magic Lantern does not install into your camera but to the SD card. The chances of bricking your camera are extremely low (but not zero).

Magic lantern canon 60d install