ive tired searching google and found this site so i signed up and have tired searching all sorts of stuff. seams so many topics are dead with no answers. i have the x910bt unit and its having the reboot loop problem. i found a topic that explains you can try to fix this problem by inserting a card with the test files on it so that when the unit finally starts up itll enter test mode and then you remove 4 files. So where can i find these "test mode files" at that i need to put on a card. Thank you for your help in advance,

thought i found the files but it didnt work, tired searching this site but everything is back for 2010 and links are dead.......

Im having the same issue, but this is where i got my testmode file from:

http://avic411.com/index.php?/topic/31534-condis-hackmode-v14-diskrw-gpsgate-textfiller-regeditor-with-reg-files-associated-updated-13062011/

Still haven't fixed it, mine just keeps looping.