Cisco 1841 ROMMON software

[Matt Wilson]

Looking at the Cisco Software Download centre for the 1841 Integrated Services Router it shows C1800_RM2.srec.123-8r.YH13 as the latest IOS ROMMON version dated 16/11/2010. My 1841 has the C1841_RM2.srec.124-13r.T dated 06/09/2006. Is the 123-8r.YH13 a later version than 124-13r.T even though the version numbers are lower?

What does the upgrade fix?

Thanks, Matt.

R1841#sh rom-monitor
ReadOnly ROMMON version:

System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.

No upgrade ROMMON programmed or not yet run
Currently running ROMMON from ReadOnly region
ROMMON from ReadOnly region is selected for next boot

[Leo Laohoo · Accepted solution]

ROMmon verison 12.3(8r)YH13 is OLDER version to 12.4(13r)T.

If a newer ROMmon version is what you seek, then version is 12.4(13r)T5 is the "latest and greatest".

[Matt Wilson]

Thank Leo, just as I thought. It is just a bit confusing the way that Cisco has them presented on the software download site.

[Leo Laohoo · Accepted solution]

Thanks for taking the time to rate our posts, Matt. 

I highly recommend upgrading the ROMmon.  One major benefit with the upgrade is the option to enable booting the IOS from the USB.