New NUSS Firmware Updates

Super excited to see all the new features! I was looking to update but noticed the newest version for Multiwave (4.3.5) I can select is 4.1.6.

I followed the link in the manual to the update page, so I know I am in the right place.

To clarify, I am 100% looking at the right module and selecting the correct device.

Any help would be appreciated!