Get the firmware here: https://av.jpn.support.panasonic.com/support/global/cs/dsc/download/index.html
H-ES12035 = Leica 12-35mm F2,8
H-ES12060 = Leica 12-35mm F2,8-4,0
H-ES35100 = Leica 35-100mm F2,8
H-ES50200 = Leica 50-200mm F2,8-4,0
H-HSA12035 = LUMIX 12-35mm F2,8 II
H-HSA35100 = LUMIX 12-35mm F2,8 II