Sigma has issued firmware updates for the Sigma SD1 and Sigma SD1 Merrill digital SLR cameras. Version 1.10 for the original Sigma SD1 and Version 1.05 for the Merrill incorporate a number of improvements and fixes. It is now possible to create B/W images in raw or raw+JPEG mode, the auto focus algorithm has been refined, and the accuracy of flash exposure control has been improved. Additionally, the firmware upgrade enables the Custom Mode to save the shutter speed and the aperture value of manual exposure. You can dowload the firmware updates from the websites below.