(Notice of the start of update services to Firmware Version 1.4.0
Thank you for using Canon products.
Details
Firmware Version 1.4.0 incorporates the following fix: Fixes a phenomenon which occurs when the “Shutter button half-press” menu item, configured in “C.Fn5: Operation”>”Custom Controls Menu”, is set to metering start only; depending on when the shutter button is half-pressed, it may initiate AutoFocus. Firmware Version 1.4.0 includes all improvements and fixes provided in previous firmware versions.
Notes:
- As a result of this fix, cameras with Firmware Version 1.3.9 (or later) will not be able to read the “camera settings file” created with cameras running Firmware Version 1.3.5 (or earlier). If you require the “camera settings file”, please create it after updating to firmware version 1.3.9 (or later).
Market Support
Customers who own an affected unit and wish to have it updated to Firmware Version 1.4.0 are asked to bring their cameras to their nearest service or repair centers. For questions about this matter, please contact our Customer Service Hotline. | 
