100-400mm F5-6.3 DG OS HSM | Contemporary (Canon EF mount) firmware v2.04
Sigma · Released Feb 21, 2019 · First seen by GearPulse Jul 5, 2026
What's in this update
It has corrected the phenomenon whereby restarting the camera does not work when the lens is taken off the camera while the lens’s OS function is in operation.It has corrected the phenomenon whereby it may stop the focus driving from infinity to closer focus distance while shooting video with AF.
GearPulse never hosts firmware files — always download from the official source.
Get it from Sigma →