Canon EOS 550D Firmware 1.0.9
Canon has posted a firmware update for the Canon EOS 550D (Rebel T2i) digital SLR camera. Version 1.0.9 “fixes a phenomenon in which tone jumps become noticeable in some images, depending on the shooting scene, when shooting with the Auto Lighting Optimizer settings.” as the official release puts it. The update can be downloaded from the website below.
Website: Canon EOS 550D Firmware Updates