Yes, keeping your Pioneer SC-LX85 AV receiver updated via firmware is highly recommended, especially to mitigate common overheating issues and resolve legacy software bugs.
Pioneer’s iOS/Android remote app required a firmware baseline of v1.4 or higher to support volume feedback and multi-zone control. Without the update, the app would connect but fail to display correct input status — a “hot” demand for smart home integrators. pioneer sclx85 firmware update hot
or regional Pioneer equivalent to locate your exact product page. Yes, keeping your Pioneer SC-LX85 AV receiver updated