Install the latest version of HELEOS I firmware (v2.3.1.4) for optimal performance of your instrument.

Release Notes describe firmware improvements.

 Download Installer

ASTRA 5.1.5 or greater is required to use the latest firmware. Upgrade ASTRA.


If you cannot connect to your instrument, see Firmware Update Connection Assistance.

DAWN HELEOS I systems shipped before December 12, 2005 contain a bug which occurs when restoring factory default configurations. Installing this fix and then rebooting your instrument will correct this problem.

Factory Restore Fix (294 KB) Updated ReadMe Document