Very frustrating. I've been looking everywhere for it as well. I have a ton of Fluke gear and there's basically no support or even resources after Fluke sold to NetScout/NetAlly. I don't expect them to release new firmware updates forever, but I can't even find any of the software to download any more. It's as if all the downloads were scrubbed from the internet after they sold to NetScout/NetAlly and now you're forced to pay for a subscription or buy new equipment. Ugh...
Were you ever able to find any of the firmware/software?