I see that a firmware update for my EF 40mm f/2.8 STM lens is available. How do you update the firmware on the lens? The Canon website shows the downloadable file, but what do I do after I download the file?
Thanks.... sure enough, when I downloaded the firmware update from the Canon website, and opened up the zipped file, the documentation gave a detailed step-by-step procedure to use to transfer the firmware update file to a memory card for insertion i...
