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

Unlike standard IOS-XE software upgrades, ROMMON upgrades are often subtler. However, running the correct ROMMON version is essential for:

From the IOS-XE CLI, check the current bootloader version:

For other platforms in the ASR 1000 series, such as the ASR 1004 or 1006, reverting is still technically permitted if needed Upgrade Mechanics and Best Practices The upgrade process involves using the upgrade rom-monitor command in privileged EXEC mode . Key considerations include: Prerequisites : Ensure you have verified the MD5 signature of the asr1000-rommon.173-1r.spa.pkg

: Use the command copy startup-config running-config after the upgrade to properly parse the configuration. This known issue is tracked under Cisco Bug ID CSCwd81813.

Next, verify that you have enough space on your local boot flash: Router# dir bootflash: Use code with caution. Step 2: Transfer the Image safely This known issue is tracked under Cisco Bug ID CSCwd81813

Perhaps the most critical aspect of upgrading to asr1000-rommon.173-1r.SPA.pkg (ROMMON version 17.3[1r]) is the non-downgrade restriction. Once a router is upgraded to this version, it (e.g., versions 16.x or earlier).

🔌 : Never remove hardware, turn off power, or disrupt the router during the ROMMON write process, as it can corrupt the bootloader. Once a router is upgraded to this version, it (e

ROMMON upgrades do not take effect until a hard reboot is performed. Schedule a maintenance window and reload the router: Router# reload Proceed with reload? [confirm] Use code with caution. Copied to clipboard Step 4: Verify the Upgrade

To execute the new ROMMON code, reload the router (or schedule it during your maintenance window): Router# reload Use code with caution. Step 4: Post-Upgrade Verification