Sean,the 350 link,says page not available.But may I ask,why does one need these firmware upgrades ?.Are they only needed if one is using the software,which comes with the camera ?.I have never used the discs which are provided,just use a card reader.But when the 20d went to be cleaned ,I noticed the Firmware had been updated,the same with the 300d.It does not affect the handling and use of the camera,or does
it?.