my Helix floor has done the same too ,seems to be going nowhere....
after some time I got it working by
1 unplug usb
2 turn off helix
3 hold down button 6 and 12 and turn power on
4 when Helix logo appears let go
5 make sure to install latest HXedit with all the drivers
6 Plug Usb in
7 open the update app and reinstall file
Hope this is helpful