I upgraded the firmware in my T5i from 1.1.3 to 1.1.5 and now the LCD screen blinks off for 1 or 2 seconds about every 30 seconds. It seems to be worse when set to 'P' mode. I don't remember the camera acting like this before the upgrade. Can I go back to 1.1.3 or reload the 1.1.5?
Tipping the camera up makes the display go out. Move the camera and the display comes back on. Aiming at a lamp and it seems to stay on. Light related? Time out due to not being used? LCD stys on when set to lilve shooting.
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"I upgraded the firmware in my T5i from 1.1.3 to 1.1.5..."
It is not necessary to upgrade FW unless there is a reason to. For instance and upgrade to lenses supported and you have one of the lenses. Sometimes, but very rarely, FW adds a new feature so that would be a good reason. Otherwise you probably won't receive any benefit from doing so.