Download it here: av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/index2.html
Improvements on the GH5:
Function can be assigned to the Fn button of the interchangeable lens including H-ES200.
Video recording stability in VFR (Variable Frame Rate) mode is improved.
Improvements on the G80/G85:
Performance of image stabilizer is improved with the interchangeable lens LEICA DG ELMARIT 200mm / F2.8 / POWER O.I.S.(H-ES200).
Operation bug occurred in specific conditions when the camera is controlled with external devices are fixed.