Pada bulan mei 2011 kemarin canon merilis firmware 2.0.9, berikut sedikit penjelasan mengenai firmware tersebut yang saya ambil dari webnya canon:

Changes in this firmware: Firmware Version 2.0.9 incorporates the following improvements and fixes.
1. Improves writing/reading speeds when using UDMA 7-compatible CF cards.
2. Fixes a phenomenon where the IS function will not work when custom function C.Fn III-2 is set to [5: IS start] and the lens attached does not have an AF stop button. This is because custom function C.Fn III-2 allows users to assign IS start to the AF stop button on the lens
3. Corrects misspellings in the menu screens displayed in Arabic, Portuguese, Spanish, and Thai languages.

Go here to download it: Firmware 2.0.9

Thanks