I assume you mean by the home key the key marked PORTAL. I also assume the receiver does not give a remote feedback (dot in left of VF display) when you press it. If that is the case, you use an evremote2 that lacks the support for that key.
If you build your own image, unpack attached Spark.c.zip to Spark.c and replace in tdt/cvs/apps/misc/tools/evremote2, then rebuild the misc-tools.
If not, try the evremote2 in the attached Spark.c.zip file (may not work because it comes from my own image), or look in this forum for one that claims to support PORTAL. Caution: you may end up with a receiver that cannot be controlled by the remote control, so be prepared to use the frontpanel keys or to reflash.
Finally, check that KeyBindings.py (in /usr/lib/enigma2/python/Tools) contains this line in the RCs with ID2 section:
KEYIDS["KEY_OPEN"]: ("PORTAL",),
In keymap.xml the PORTAL key is called KEY_OPEN as you can see.
Regards,
Audioniek.
Attachment: Spark.c.zip