I have a Linksys router that I loaded Hsmm-mesh software to about 4 or 5 years ago.  I am trying to update the firmware but have forgotten the password that I set at that time.  Is there any way to reset the password or a work-around that anybody knows about?

Read through these posts:

http://www.broadband-hamnet.org/hsmm-mesh-forums/view-postlist/forum-3-firmware/topic-1670-i-forgot-the-setup-password-how-to.html  (Note: video link doesn't work anymore)

http://www.broadband-hamnet.org/hsmm-mesh-forums/view-postlist/forum-5-problems-a-answers/topic-1683-hsmm-linksys-unknown-password.html

Basically, both these links (and the removed video) followed the instructions found under User Documentation -> Page 2 -> 23. Using Failsafe Mode to reset a forgotten password:  http://www.broadband-hamnet.org/documentation/71-using-safe-mode-to-reset-a-forgotten-password.html

Follow these instructions (23. Using...).  Diverge where it states to type "setpasswd abc" and instead type "cat /etc/httpd.conf"  This will allow you to see your old password.  Finish the instructions and login with the password you just rediscovered.