The update of the second RC, was canceled because of bad connection of USB. Now the led lamp is lightblue/white all the time. And yes, I've removed the TXT file and a new USB. But nothing happening it just write a new TXT result file wiht the text:
==========1970.01.01 00:00:12==========
Packet: /mnt/usb/WM610_FW_V01.02.00.17.bin,
Result: Error
Failed to obatin firmware version. Power cycle the remote controller to upgrade the firmware again.

Anyone with a solution?

Try it again but by following this chart.
http://forum.dji.com/forum.php?mod=viewthread&tid=9186

Okay, but whats the different with this chart? The first RC update correct, the second RC was interrupted, after that the LED is lightblue/white. And it just write a new TXT result file with error. The LED is same without USB too. So I think I have to do something else.