Canon EOS 550D Quick Reference Guide

To change the ISO settings, press the 'ISO' button on the top of the camera. Use the Main Dial to select the desired ISO speed and press the 'SET' button to confirm.
First, ensure the battery is charged and inserted correctly. Check the battery compartment and clean any contacts if necessary. If the issue persists, try using a different battery.
To reset the camera, go to the 'MENU', navigate to the 'Set-up' tab, and select 'Clear Settings'. Choose 'Clear all camera settings' and confirm.
Blurry images can be caused by slow shutter speeds, incorrect focus, or camera shake. Use a tripod, increase shutter speed, or ensure the focus is set correctly to improve image sharpness.
Download the latest firmware from Canon’s website and copy it to a formatted SD card. Insert the card into the camera, go to the 'MENU', select 'Firmware Ver.x.x.x', and follow the on-screen instructions.
Use a manual air blower to remove loose dust. For more thorough cleaning, use a sensor cleaning kit, following the instructions carefully to avoid damage.
Reduce the use of the LCD screen, disable image stabilization when not needed, and turn off wireless functions. Also, ensure the battery is fully charged before use.
Ensure the lens is set to 'AF' mode. Clean the contacts on the lens and camera body. If the problem persists, test with a different lens to determine if the issue is with the lens or camera.
Press the 'MENU' button, navigate to the 'Shooting' tab, and select 'Grid display'. Choose the grid option you prefer and press 'SET' to enable it.
Connect the camera to the computer using a USB cable, turn on the camera, and select 'Import photos' on your computer. Alternatively, remove the SD card and use a card reader.