on the V710 and that early ULF, here is all I can offer for help.

Get the latest firmware loaded in the V710! (even try the hacked V710 versions)
Set the V710 to Bluetooth Always ON.
On the charging, check the wiring as SuperGreg mentioned.
Charging is the red pin on the eject box.
The white pin is Cradle activate. It tells the REd pin to give Juice to the Red pin. It needs to be in location 13.

I sound like Morpheus talking to Nero here.... The red pin will answer the question what is the Matrix? and the white pin simply for life to carry on as before.