Checked and this Firmware version is for MOL3 and not for MOL4! There are still user who use MOL3 on Z12, many of them.
For user who upgraded to MOL4 and become higher FW Version its wrong thread, please use other MOL4 Beta thread. Thx.
I'm still on MOL3 but have a higher firmware version than this so it won't show on update even after wiping and resetting.