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Cisco 806, Cisco 820 Series, Cisco 830 Series,
SOHO 70 Series and SOHO 90 Series Routers
ROM Monitor Download Procedures
November 18, 2004
This document contains procedures for downloading ROM Monitor (ROMMON) software upgrade
images. A ROMMON upgrade is required if you are upgrading Cisco 828, Cisco 830 Series, and SOHO
90 Series router to Cisco IOS Release 12.3(8)YA or later to take advantage of the IOS “No service
password recovery” feature. If you have purchased a Cisco 828, Cisco 830 Series, or SOHO 90 Series
router with a Cisco IOS Release 12.3(8)YA or later image already installed, you do not need to install a
ROMMON upgrade image.
A ROMMON upgrade image is also required if you are upgrading Cisco IOS 827-4V Voice images to
Cisco IOS Release 12.2(2)XK or later. If you have purchased a Cisco 827-4V router with a Cisco IOS
Release 12.2(2)XK or later image already installed, you do not need to install a ROMMON upgrade
image.
Caution If you are downloading a C820 Cisco IOS image with the Voice software feature, you must first
upgrade to ROMMON upgrade image version 12.2(4r)XM2 or later before you download and run the
IOS image on your Cisco 827-4V router. Failure to do so will cause the router to operate improperly
and enter into an unrecoverable state.
This document contains the following sections:
• Supported Platforms
• Important Notes
• Downloading Images
• Obtaining Documentation and Submitting a Service Request, page 5