I think that I had to update it after it was connected or I check to see if there were any up dates before I set it up. Hope this answered what you needed to know. Firmware should be check periodicaly on these devices.
Not very difficult. Instructions were very clear and I, also being technically challenged, was able to set this up on the first try and within a few minutes. I was replacing an older Linksys router, and it took me longer to reset the laptops to connect than the set up of the router.