High-quality builds support dual-image flashing. Do not overwrite the backup image. Simply flash to the main image. This allows you to roll back if the new build has issues.
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Navigate to: System Tools > Firmware Upgrade or Maintenance > Software Upgrade . High-quality builds support dual-image flashing
display device power display optical-module information Check for normal TX/RX power (around 0.5dBm to 4dBm for TX; -27dBm to -8dBm for RX). Even with high-quality firmware, you may encounter edge cases. This allows you to roll back if the new build has issues
After the progress bar hits 100%, manually power cycle the device (unplug power for 10 seconds, not just soft reboot). This clears the NVRAM cache.