I have the Fire HD 7 4th generation using OS 5.6.8.0.
.Sonos S2 App is not supported. What can I do if anything?
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Ths Sonos app is supported on Fire OS 7 and higher. Can your Fire HD be upgraded to Fire OS 7?
https://support.sonos.com/s/article/4875?language=en_US
Afraid not.
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