I made the jump to 1.0.8 from 1.0.6 and noticed that AF was faster...... I don't know if it was placebo and I thought only the movie function was change. Anyone know if there was any other change other then the movie mode? And anyone actually upgraded from 1.0.7? What was the change from 1.0.6 to 1.0.7?
You can get your update here from the official website with instructions: Canon EOS Rebel T2i / 550D Firmware Download I feel the AF is faster. And I don't see any negative effects upgrading.