How very strange that it took that long yet ended up completing. Trust me - it should only have taken 5-10 minutes

Having the offline update.zip on an attached USB key, or on the SD card, during a normal online update can cause the eDGe to endlessly patch and reboot.

All you need to do is delete the update.zip you downloaded. You can leave the USB key in the eDGe and go to the "Storage" app, tap on "USB0", tap and hold the update.zip and delete. Perhaps enTourage has updated the update procedure to delete the update.zip for you, so the file may not be there, in which case you're done.

It's better to delete the file than have it haunt you down the road