bootstrap upgrade

[bbtMichaelR]

I'm upgrading IOS on an 1861 from 12.4.24 to 15.1.4, and I've noticed that the bootstrap is running 12.4.  Being a major version upgrade on the IOS, I was wondering if I should upgrade the bootstrap while I'm at it.  I've found the procedure for updating it, but I'm not sure what the source file is for the upgrade, and I can't seem to find in in the cisco downloads.  Am I supposed to extract this from the IOS binary file somehow, or am I missing something on cisco's site for downloading a newer version? Or...is there even a newer version of the bootstrap?

[Leo Laohoo · Accepted solution]

I've noticed that the bootstrap is running 12.4. 

Which exact version?

I've just checked the Cisco Software Download website and the 1861 doesn't give you option to download a new bootstrap.  So I guess my initial response is a moot point. 

[bbtMichaelR]

ok thanks, I beginning to suspect that it doesn't support it the more I googled, but nothing explicitly says it doesn't.

thanks