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

After boot, re-run:

show platform rommon

Expected output:

ROMMON version:  System Bootstrap, Version 17.3(1r), RELEASE SOFTWARE

A: Yes, but not recommended. If you must, use the same install add procedure with the older .pkg. Some older ROMMONs disable newer hardware features.

ROMMON is the low-level bootstrap firmware embedded in the processor complex of an ASR 1000 Route Processor (RP) or Embedded Services Processor (ESP). It resides on a physical ROM chip and is the first code to execute when the router powers on. asr1000-rommon.173-1r.spa.pkg

Its core responsibilities:

Without a functional ROMMON, the router is bricked at the hardware level.

A: Yes. Use:

rommon 1 > boot usbflash0:asr1000-rommon.173-1r.spa.pkg

But for upgrade, use rommon-upgrade usbflash0: .

  • No New Features for Most Users

  • One-Way Upgrade on Some Platforms

  • Requires Reload

    • ROMMON upgrade is potentially hazardous. A failed upgrade (power loss during write, bad file, wrong hardware) leaves the RP in a non-bootable state.

    (Exact command syntax can vary by ROMMON and IOS‑XE version; refer to device CLI documentation.) After boot, re-run: show platform rommon

    upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg rp0

    For dual RP systems:

    upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg rp0
upgrade rom-monitor filename bootflash:asr1000-rommon.173-1r.spa.pkg rp1