I replaced a failed processor board in a MTH Premier RDG Camelback 20-3359-1 and upon downloading the proper sound file, the quilling whistle feature no longer works even though the icon soft key is present. Is it possible that this needs a flash download to restore this feature? I did do a factory re-set, but that did not cure the problem. All other features work as expected.
Eric Hofberg
TCA, LCCA
MTH Technician