Fujifilm wrote:•Detail of the update
The firmware update Ver.1.04 incorporates the following issues.
1. Better white balance when setting FLASH-mode for the WHITE BLANCE.
2. Better white balance when setting AUTO-mode for the WHITE BLANCE and using Nikon non-CPU lenses.
*It requires to set the maximum aperture according to the FinePix S5 Pro Owener's Manual(p.121-p.124).
Firmware and details can be found here.