Rebel XS was working fine... yesterday, all of a sudden, the LCD screen went blank and it displays 'busy' when trying to take a picture. Recharging the battery and replacing the sd card didn't change anything. Help!

I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS.

Installation of this Canon EOS Rebel XS firmware version 1.06 update will solve these problems:

1. Some cameras may exhibit a phenomenon in which the LCD monitor does not display, the shutter does not release, and the BUSY indication remains lit in the viewfinder.
2. The message, "Err 99 Shooting is not possible. Turn the power switch to<OFF> and <ON> again or re-install the battery", appears on the camera's LCD monitor, and after the above operation is carried out,the LCD monitor displays in a language that is different from the actual language setting.

1. Follow this link to download a pdf version of the firmware installation instruction guide.
2. Follow this link to download the Windows Version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
3. Follow this link to download the MAC version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
4. Follow this link to download the Canon EOS Rebel XS / Canon EOS 1000D Instruction Manual.