I don't think that you are actually saving the MIDI maps – as far as I can see it does not send these. Probably should, but …

That aside, if you just send the saved dumps back to the H9, it should recognize and load them – it does not need a command.

Note that there is a risk in sending these dumps back to the unit – if they get corrupted in any way, the H9 may not be able to load them and may get confused, meaning that you will have to restore it to factory settings to resume operation.