# Troubleshooting an Async Firmware Operation Error on the NextSeq 500/550

This error is due to a transient communication issue that does not affect run progression or performance.

**Possible error messages:**\
"AsyncFirmwareOperationCommand timed out waiting for started after XX:XX:XX."\
"While waiting on an asynchronous firmware operation: camera bitmask 111111 Originally caused by: Failed XY Stage."\
![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-4684d117c3b6a9908e04afd789fd4402f5cab32c%2Fimage1.jpg?alt=media\&token=db57a82e-1ed3-4e30-a103-b9fefb69e7f0)

**Troubleshooting steps:**

1. If the run is continuing, allow the run to complete and monitor.
2. After the run completes, review run performance. See [Specifications for the NextSeq 500/550 System](https://www.illumina.com/systems/sequencing-platforms/nextseq/specifications.html).
3. Power cycle NextSeq 500/550.\\\*
4. If the system initializes, proceed with the next sequencing run.

If the same notification is displayed over 2-3 consecutive runs, contact [Illumina Technical Support](https://www.illumina.com/company/contact-us.html#/united-states/technical-support), for further assistance.

\\\*For further information, search for Knowledge Base Article **How to Perform a NextSeq 550 Power Cycle.**

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #1680), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000001680%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |