http://av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/index2.html GH4 - In VFR (Variable Frame Rate) shooting mode, there were cases where the image stabilization did not operate when non-Panasonic interchangeable lens is used. This bug has been fixed. H-HS030 - Macro - Dual I.S.2 is available by this firmware update. (in case of the usage of Camera with this function) H-NS043 - Nocticron 42.5 - Dual I.S.2 is available by this firmware update. (in case of the usag