How to tell firmware version?

Go ahead with installation of the new firmware. Get the web interface up on a browser, and go to the Admininstation-->Firmware Upgrade menu. Select the filename of your new firmware, and click on the upgrade button. Then, during the minute that it takes to complete, grab a piece of scrap paper and a pen, and look in the upper right corner of that page... and write down the version of the existing firmware. Don't make a mistake, because it will be gone in about 1 minute 10 seconds or so... ;-)

Or just look at the upper right corner of almost any of the web pages. Most of them should have it.

What's the status page say? Depending on the firmware version, it might even be on every single page, in the upper right-hand corner.