The second firmware update from Canon today relates to the EOS 20D and the astrophotography version of the same camera, the EOS 20Da. Firmware version 2.0.3 fixes the same two problems; one with the color temperature transmission that occurred when using the Speedlite 430EX and improves reliability when using CompactFlash cards.

Click here to download Canon EOS 20D firmware version 2.0.3 (Windows and Mac)

Click here to download the Canon EOS 20Da firmware version 2.0.3 (Windows and Mac)

Release notes:

Canon EOS 20D/20Da firmware update version 2.0.3

What has been changed?

  • Fixes a problem in color temperature information transmission that occurred when using Speedlite 430EX.
  • Improves reliability in communication when using CF cards.