I have a 3 year old Canon Rebel T4i camera. I have no issues till now. But today I had a noticed a strange behaviour with resected to selection of the shooting mode. I was shooting in the Auto (A+) mode and I was switching the shooting mode btwn auto and hand help shooting. I think, I had rotated the dial fast at one point of usuage. Then the camera is not going to either the auto or hand help portrait. The camera hung up for a while and then the aforementioned issue happened. After that even iif i select the Auto mode then the no flash mode which is next to it is displayed on the lcd and the camera acts as if it is selected. I am seeing on LCD that the next mode is selected as rotate the dial. Like this, some modes are not selectable like Priority, Handhelp portrait and Night time portrait. I suspect that firmware is corrupted as I have turned the dial very fast when taking the pictures. Please help to resolve this issue.