How can I receive firmware update notifications for my HI 6600 Series modules?

We will update this WebTech answer whenever the firmware has been updated on the HI 6600 and HI 6610 modules. To receive notifications please click on the "Notify Me if This Answer has been Updated' button at the bottom of this answer. You will have to create an account and use your email address as your user ID to receive the notifications.

See the attached document for a list of firmware release notes.

To download the latest version of firmware go to the HI 6600 products page and click on the Docs and Programs tab.  Find the firmware download file towards the bottom of the page.