There has been talk of a 'recall' elsewhere, we can clarify that this is simply a firmware update but it is one which can't be applied by the user. This update solves an issue with White Balance Bracketing: "When Image Review (Custom Setting 1) is set to “On” and Bracket Set (Custom Setting 11) is set to “WB Bracketing” it is possible that the White Balance bracketing feature may not perform as expected. Additionally, if Image Review is “Off” but the “Monitor” button is pressed while images are being written to the CF Card the White Balance bracket may not perform as expected." Check your camera by viewing exposure information in camera, simply display an image and press the left or right arrow until 'FIRM VER' is displayed. Nikon D100 cameras with firmware V1.0 will need updating.