many astrophotographers making similar aftermarket modifications to later Canon models. In April 2012, Canon announced the EOS 60Da which is the successor to the EOS 20Da. Firmware The latest firmware available for the 20D (and believed to be the final update) is version 2.0.3, made available 23 August 2005, which improves the communication reliability with some CF cards and other minor changes. References External links Canon EOS 20D Specifications 20D Cameras introduced in 2004