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

This article provides an exhaustive breakdown of this file—what it is, why version 173-1r matters, how to upgrade it safely, and how to troubleshoot when things go wrong.

: Providing a low-level environment to recover from lost passwords, corrupted software images, or hardware failures Separation of Powers

Router# show platform

, once you upgrade to version 17.3(1r), you to an earlier ROMMON version. asr1000-rommon.173-1r.spa.pkg

: If the router fails to boot post-upgrade, ensure your configuration register is set to 0x2102 (standard) rather than 0x2100 or 0x0 .

Cisco documented a known issue (CSCwa12192) where this upgrade might cause modules to enter a "disabled" state. Upgrade Procedure

The filename itself is highly descriptive. The asr1000 prefix indicates the platform is any ASR1000 series router. rommon specifies the target firmware type. 173-1r corresponds to ROMMON , where r stands for a "ROMMON package release". The spa designation marks it as a shared-port adapter style package for ROMMON, and the .pkg extension denotes it as a package file for field-programmable devices. This article provides an exhaustive breakdown of this

Once the router boots back up into Cisco IOS XE, verify that the new version is active: Router# show platform | include ROMMON Use code with caution.

The asr1000-rommon.173-1r.spa.pkg file is a critical ROM monitor (ROMmon) upgrade for Cisco ASR 1000 series routers, specifically required for compatibility with Cisco and later releases. Key Considerations

SPA (Signifies a digitally signed, production-ready Cisco archive) Supported Platforms Cisco documented a known issue (CSCwa12192) where this

Optimizes how the Route Processor (RP) interacts with internal eUSB, SSD, or dynamic memory allocations during cold boots. Compatibility and Prerequisites

: The upgrade process hangs during the "Burning upgrade partition" phase.