Ironically, Ver. 1.2 slightly improves battery life—by about 5%—because the processor isn't wasting cycles correcting the sleep/wake bug from Ver 1.1.
. Most units still run on or minor stability patches. This is largely because the panasonic fz1000 ii firmware update
That said, keeping firmware current is always a good habit—especially if you plan to sell the camera later. Ironically, Ver