Looks like it does not handle firmware updates, which is a plus. I uninstalled the app when they started rolling a firmware update to my QC35 that was widely reported to reduce the effectiveness of the noise cancellation.
FYI, you can officially roll back firmware to a specific version from Bose, and there are 'hacks' [0] (simple MiTM) to allow downgrading to any version.
0. https://github.com/bosefirmware