Olympus has updated firmware for three of its Zuiko Digital lenses. The changes made are to improve the accuracy of contrast-detection autofocus when used on the Panasonic Lumix DMC-L10. Updated: firmware changes to Olympus or Panasonic lenses can only be conducted using the lens manufacturer's cameras.
http://www.dpreview.com/news/0804/08041701olympuslenses.asp