Fujifilm released firmware update version 4.01 for the Fujifilm X-T2 camera that basically rolled back the previous firmware 4.0 due to several "malfunctions". Additional information on the reported issues can be found at FujiAddict:
Regarding the Malfunction of the FUJIFILM X-T2 and Fujifilm GFX, X-Pro2 and X-H1 Firmware Postponed
Fujifilm Rolls Back Firmware 4.00 Feature From The Fujifilm X-T2 With 4.01 to Fix Bugs
Fujifilm X-T2 Firmware 4.00 Officially Released, Feature Guide and More
Via FujiAddict