I have a new T2I. I am planning to put Magic Lantern on it. Any suggestions. What about the Canon update? Should I install the update before doing Magic Lantern? Any other helpful suggestions about doing the Magic Lantern?
I just did my T2i, and I was biting my nails all through the process. Guess what - nothing to worry about. Just follow the directions explicitly. There's an installation file available which walks you through the steps, the a user guide which install to your camera, so you've got everything on board. It's not immediately intuitive - read the manual. You get to the ML menu by pressing the Trashcan button - did I say non-intuitive?
So what do I have now? With the Xmas release, which I installed, I now have the ability to do a follow focus automatically, HDR shooting with ease (up to 9 shots, I think), ISOs which are off the charts, and tons more functionality - especially the audio fixes, which I haven't put to work yet - I'm waiting for a mono to stereo mini cable for my shotgun mic. This makes sliced bread look lame in comparison. Good luck.
Peter is right about the "hang". It's critical to get the battery out immediately, since there's something mentioned in the ML docs about a loop being created which can cause damaging heat to build up. According to the ML docs, you just put the battery back in, reboot, and good to go. I haven't run into this yet, but I'm still in the testing phase, and haven't taken it out on a paid shoot with ML installed. I want to know the fine points first.