now, i'm thinking we can use maps/pois from Z110 update (cnsd-210FM), but unfortunately, even after I strip out alot of stuf (canada, other langs, etc), it's still like 2+ GB and wont fit on "My Flash Disk2" which is ~1.8 GB.
I'm guessing the official CNSD-230FM for u310bt family either is pared and squeezed down to fit on 1.8 gb space, or they use some trick to run maps and/or pois off of the SD card.
Now... They use lots of flag (.FLG) files in various places to trigger behavior, or have specially named folders that are significant. Perhaps someone with the poi/map update can tell us