Most likely! I can see in your LIB flashing log that something went wrong, but the program did not catch it and stop as it should have done. Please retry it. And always get the latest version of my dfu-util, I fixed some bugs some minutes ago that would break on some dfu files (but not these I think). If there are still problems, please report it in the dfu-util thread: http://www.seeedstudio.com/forum/viewtopic.php?f=12&t=1353