Use the Harmony II software (when/if) we can find the latest version. Good luck with that.
Just be aware of interference and move Noahlink Wireless so that it has a clear line-of-sight to your hearing aids as opposed to hiding it behind other wireless devices.
Don't walk away from Noahlink Wireless during communications to the hearing-aids-in-your-ears, especially during a hearing aid firmware update as this could brick your hearing aids.