And again.... From P2P
"If you're using the stock cube, the old version of ArduCopter does not have the driver for the new version of the HERE, and it never will. So for the time being, stock cubes will require the older version of the HERE. If you're running Open Solo on the green cube, you have ArduCopter 3.5.4, and it has the driver for the new version of the HERE already. But, you would need to manually change the COMPASS_ORIENT parameter to something else since it is not 0 anymore. ArduCopter 3.5.5 has recently been released, and has that orientation fix baked into it, meaning the COMPASS_ORIENT parameter should be 0 again. This is **not** baked into Open Solo, and I haven't put 3.5.5 up on Solex or SidePilot yet"
So the good news is that the new HERE will work with the Green cube if you have ArduCopeter 3.5.4. However no one seems to know what the compass_orient should be set to and this is the problem. P2P was going to upload ArduCopter 3.5.5. however he was waiting on some testing and then he ended up being made very busy as a result of some unfortunate events.