I had to press the reset button on the xr500 and it's now at least connected into the admin console via the Wi-Fi route.
Ran through the setup wizard, speed test ran automatically and picked up bandwidth ok, and then it asked to do a firmware update.. clicked next and screen is currently blank with the central loading circle in perpetual clockwise motion.
Wi-Fi on laptop is still saying no internet access.. is this just the update stopping internet access or does it sound like an issue. (Not sure how long an update takes but it's been several minutes.. and my download bandwidth is 220)