Ok guys, in another thread I found this solution. It worked for me.
My 1350T was hanging on start (Loader Loading...). With the unit OFF, hold your right thumb on the Upper, Left part of the screen and plug the USB plug from your computer into the back of your GPS. The unit should boot up and stop at the screen where it shows a little computer, wire, and little GPS. Your computer should now show the GPS as connected. Only now you can pull your thumb from the screen.
I then used Webupdater to upload 4.40 to my 1350T. I'm back in business without the hassel of shipping my unit to Garmin. By the way, they sent me an email with directions to hold the WRONG part of the screen (lower, right); of course it didn't work. At least with my 1350T, you hold the upper, left!!!
Good luck