Areadvd.de did get a beta version of the 1.04 firmware for the UFS 910, which makes it possible to record to an external Harddrive.
This firmware upgrade will be available in November. An external Harddrive can be connected at the USB port at the front, or at the back of the receiver. The harddrive needs to be formatted with the FAT32 filesystem, which means you are limited to 2GB files, so a long recording will be split up in several files.
The new firmware will also offer a picture quality improvement.