Thank you for purchasing and using our products.
We are pleased to announce that the download of firmware for SIGMA 150-600mm F5-6.3 DG DN OS | Sports for Sony E-mount, which had been suspended, has resumed.
The changes in this firmware are as follows.

[Applicable products]
・SIGMA 150-600mm F5-6.3 DG DN OS | Sports in Sony E-mount

[Benefit of the update]
Ver. 02
・AF assist function during video recording is now supported.
*Only SONY camera models with AF assist function are supported.
・The phenomenon whereby in rare cases the focus moves after being fixed during single AF when it is used on the Sony α7 IV has been corrected.

[How to update]
Please click “Sony E-mount (corresponding serial number)” in the firmware download page below, read “Before updating” and follow the update procedure.
https://www.sigma-global.com/jp/lenses/s021_150_600_5_63/?tab=support&local=firmware
*After the update is complete, be sure to remove the battery pack from the camera and reinsert it.

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
https://www.sigma-global.com/en/world-network/

We appreciate your continued support for our company and products.