Following the directions on the nook website, I copied the file sideload_update.zip to the root directory, and nothing happened after 2 hours, still 1.0.0. On phone with technical support several times, repeated above many times, reset to factory, etc, still 1.0.0, once got a notification that update successful, but said updated to 1.0.0. Any suggestions, or is there a another file that would work? Thanks for any help.