Sigma ELECTRONIC FLASH EF-630 (SIGMA SA-mount) firmware v1.01

Sigma · Released Sep 16, 2016 · First seen Jul 5, 2026

v1.01 is not the latest firmware for the Sigma ELECTRONIC FLASH EF-630 (SIGMA SA-mount): the current version is v1.05 (August 5, 2021). Go to v1.05

In short — summary by updatemystuff.com

LCD remains lit during menu navigation, two-stage caution prevents overheating, serial number display corrected.

  • LCD panel stays illuminated while adjusting display settings
  • Two-stage caution display protects against overheating from continuous firing
  • Serial number display error resolved

Written from Sigma's release notes, which are printed in full below.

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What's in this update

The LCD Panel Light is now kept on continuously while selectin​g DISPLAY SETTING.It has changed the setting of Caution display to be two-stage to prevent overheating of the flashgun’s circuitry after continuous firing.

It has corrected the phenomenon where the correct serial number was not displayed.

  • Please check if correct serial number is displayed by reconnecting the ELECTRONIC FLASH EF-630 after completing​ the firmware update.
  • If you are using SIGMA Optimization Pro Ver1.3 or earlier, please ensure to update it to Ver1.3.1 before updating the firmware.
  • It takes about 3 minutes to update.

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Other versions for this product

See the full firmware history for the ELECTRONIC FLASH EF-630 (SIGMA SA-mount)