LE40B650 problems with samygo chanedit

[DrFumanchu]

Hi,
I have a le40b650t2p.
a few months ago i used samygo chanedit to edit the chanellist.
i transferd the list to usb stick with "volume -" and "enter".
now i changed my channels and want to transfer my channellist to the usb stick again(a brandnew 8gb).
but it dont works.
i push "volum -" and "enter" but theres no option on the screen.
and after about 20 sec. the screen is black for a short time.
i have the "T-CHLCIPDEUC-2008.2" firmware.
sorry for my bad english but i hope there is anybody who can help me.