17-70mm F2.8-4 DC MACRO OS HSM | Contemporary (SIGMA SA-mount) firmware v1.01
Sigma · Released Sep 20, 2013 · First seen by GearPulse Jul 5, 2026
What's in this update
It has improved the stability of the Optical Stabilizer’s operation.
GearPulse never hosts firmware files — always download from the official source.
Get it from Sigma →