Asr1000-rommon.173-1r.spa.pkg

Here is a helpful technical post formatted for a network engineering blog or knowledge base forum.

The filename follows the Cisco ASR 1000 naming convention, breaking down as follows: asr1000-rommon.173-1r.spa.pkg

I can provide the precise, validated upgrade path for your exact setup. Here is a helpful technical post formatted for

The ASR 1000 keeps a backup ROMMON image (Golden ROMMON) in a protected partition. If you upgrade to 17.3.1r and something goes wrong during the boot process, the router has logic to fall back to the Golden image to allow you to recover. asr1000-rommon.173-1r.spa.pkg