Bose nc700 unreleased firmware?

[ja14000]

I was recently sent a replacement pair of nc700s and I noticed that the firmware that is on them (2.0.4) is not listed anywhere on Bose's website, nor can I find any reference to it outside of a single reddit post by another person who was also sent a replacement pair with the same firmware. I can't say I've noticed any huge differences from my previous pair (which were on 1.8.2 iirc), but I've all the differences I can see below.

• Noise cancelling performance seems identical.
• Bluetooth range seems identical.
• Microphone performance seems improved, I can talk at my natural volume and I get no complaints, with my previous pair people would always ask me to speak louder.
• There seem to be less stutters when connected to multiple devices, in fact, now the stutters seem to only occur when one of the two devices is an ios device (my iphone or ipad),and said ios device has recently/or is about to play a sound, my previous pair would stutter at random when connected to any two devices, regardless of operating system. I eventually stopped using multipoint all together.
• I tried updating them with the Bose updater app from this repo, and from the official Bose webpage, in both cases the firmware was listed as 2.0.4 and the applciation stated that I am on the latest version. Performing the 'konami' code listed in this repo brings me to a menu that only contains the option to send my diagnostic info to Bose, no options to upgrade/downgrade to any other firmware.

I'd be happy to dump the firmware if someone is able to talk me through the process. I've also attached a screenshot from the Bose updater app.

[miles5600]

i'd like to try updating my bose headphones to 2.0.4 from your dumped file. i don't know how to dump files so that's gonna be a problem. hopefully someone else can help.