Which of the following is NOT a step to resolve sync loss in a Dante network?

Updating device firmware is not a step specifically aimed at resolving sync loss in a Dante network. Sync issues typically stem from networking or timing protocol configurations rather than software version discrepancies. The other options are directly related to common diagnostic and troubleshooting practices in a Dante network.

Checking switch configurations helps ensure that all network devices are properly set up to handle Dante’s requirements. Testing with IGMP snooping disabled can clarify whether multicast traffic is correctly managed by switches, which is essential for syncing devices. Ensuring that Precision Time Protocol (PTP) traffic can traverse the network is crucial because PTP is responsible for clock synchronization among devices in a Dante network. Without proper PTP configuration and traffic flow, sync loss can certainly occur. Each of these steps addresses specific factors that contribute to synchronizing audio distribution over the network, while updating firmware, while still important for general device performance and stability, does not directly address sync loss issues.