I want the update but I am not sure I want to be permanently on the early release list. I downloaded the firmware file from the site for 13.1.1 but haven't applied it yet because I am not 100% sure on the following.

Can the firmware be applied to the USB image on the Linksys 1900ACS without me losing my settings and configuration? I am thinking it is safe to do ... but that assumption could bite hard if it is a bad assumption. Can anyone tell me if it is safe and explain where UT on the Linksys 1900ACS stores my configuration and settings if not on the USB? I think this would be good for me to know and understand.