There is something wrong because 5 hours are too much. I hope you backed up your GDFS. Do you use DCU-60 cable? Do you installed the USB flash driver that comes with SETool2 Lite v1.10/v1.11?
I think you can start again. If it doesn't works use jdflasher. Don't know why, but SETool2 Lite doesn't works for some people...