I also got the invalid message but on the XR, tried a few times still did get past it, what worked for me was similar to BCWBOBs,, when I got through to Invalid message again I let it sit for about 20 min then rebooted by pulling the power wire Out then in
(10 sec) on reboot it went to Home page and started reg D/L, You have already tried a number of ways so one more should go easy,
(10 sec) on reboot it went to Home page and started reg D/L, You have already tried a number of ways so one more should go easy,