You can. See the following. https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/SBG7580-AC-Web-Manager-Access#:~:text=For%20security%20purposes%2C%20ARRIS%20recommends,the%20Repeat%20New%20Password%20field.

Thanks, unfortunately I jsut shot myself in the foot. I was no longer using the dfaults, so this process didn’t work. (Thank you @LoveMyLab ). As it turned out I had printouts of the configuration changes I made (which were minimal) so I bit the bullet and pressed the reset. Go back to factory and reconfigured. Just really just sloppy management on my side, we moved into a new house and I failed to document a password change along the way…..sigh… always write that stuff down!

I feel your pain.  Been there,  done that.