Sansa Clip Firmware Update

MY sansa clip simply will not update.   Im not sure why it is.  the  Updater program will freeze at %50.  when i try to  manualy download then copy the file into the Clip it will Freeze at %95 im not sure what to do.   I only wanted to updated because   when i tried to sync a file to the clip through WMP …it froze lol.  

any ideas on this?