Read your PM/Private Message/Conversation for information on how to find Legacy (Coselgi CTune_II_4_0_99 aka Compass GPS). Read the included PDF files for how to Install without Noah (currently Noah4 or Noah ES).
As to → Earnet Hearing Aids
I don't believe there is any hearing aid fitting software for Earnet? These appear to be (OTC/Over The Counter) hearing aids that are not adjustable using hearing aid fitting software to adjust to your specific hearing loss. Instead they may be adjustable via cellphone App or via the hearing aid buttons. But I don't know for sure, It's just a guess. ¯\_(ツ)_/¯