The feedback & real ear test should be done after anything likely to seriously change the acoustic parameters of your hearing aids or ear canals. A firmware update could do that. In fact, when I updated the firmware and went to close my session, Target reminded me to run the feedback test, but I neglected to do so at the time because it wasn’t quiet in the house. @Bimodal_user asking me about doing it reminded me I’d been negligent.
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