Sigma 100-400mm F5-6.3 DG DN OS | Contemporary Firmware v2 Not User Upgradable

Sigma’s Sigma 100-400mm F5-6.3 DG DN OS | Contemporary needs to be returned to Sigma for firmware update which is unfortunate since most lenses flash pretty easily through the camera now or with a USB dock or even a USB port on the lens. Since they recommend you check your firmware version before contacting them there maybe firmware version 2 lenses already shipping.

Firmware update for SIGMA 100-400mm F5-6.3 DG DN OS | Contemporary for Sony E-mount
Thank you for purchasing and using our products.

We would like to announce that a new firmware update is now available for the SIGMA 100-400mm F5-6.3 DG DN OS | Contemporary for Sony E-mount.

It has been found that the lens firmware cannot be updated from Ver.01 to Ver.02 by the end user via the camera. Therefore, SIGMA will update the lens firmware free of charge.

[Applicable product]
SIGMA 100-400mm F5-6.3 DG DN OS | Contemporary for Sony E-mount with firmware Ver.01

[How to check the current firmware version]
Please check the firmware version from the camera menu. If the lens version is firmware Ver.01 it is necessary to update to the new firmware version

[Benefits of the update]
Firmware Ver.02:

  • It has improved the phenomenon whereby the lens’ optical stabilizer effect differs depending on the shutter type and drive mode used.
  • It has corrected the phenomenon whereby the lens firmware cannot be updated via the camera.

[Treatment on this issue]
For customers who use the target product with the affected firmware version, SIGMA will update the lens firmware to Ver.02 free of charge.

Please note that customers cannot update to lens firmware Ver.02 by themselves. After the lens has been updated to Ver.02 by SIGMA, the user can then update all future lens firmware via the camera.

For US-based customers, please contact SIGMA America at:
For worldwide support, please contact your local authorized SIGMA Service Station at:

We apologize for any inconvenience.
SIGMA Corporation

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Sigma 100-400mm f/5-6.3 DG DN OS:
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