From Sigma:
Firmware update for SIGMA USB DOCK UD-11
Thank you for purchasing and using our products.
We would like to announce that a new firmware update is now available for the SIGMA USB DOCK UD-11 for L-Mount and Canon EF-M mount.
[Applicable product]
SIGMA USB DOCK UD-11 for L-Mount and Canon EF-M mount
[Benefits of the update]
·It improves the operational stability when updating the firmware of the applicable product.
[How to update]
Connect the SIGMA USB DOCK UD-11 to a computer with the included USB cable, then open SIGMA Optimization Pro*. If the SIGMA USB DOCK UD-11 firmware isn’t the latest version, the following message will appear: ‘The latest SIGMA USB DOCK UD-11 firmware is available’. Click ‘Yes’ to update.
* Before updating SIGMA USB DOCK UD-11 firmware, please ensure you update SIGMA Optimization Pro to the latest version.
[SIGMA Optimization Pro Download page]
https://www.sigma-global.com/en/software/sigma-optimization-pro/
More dock information: Sigma Dock Review