In case of the latter....
Set up MidiOx by selecting the BCF midi in and out ports by going to Options/Midi Devices.
Make sure you have the Input and Output Monitor windows open as well as the Midi Port Routing window (under the View menu)
Left click drag a connection from the MidOx Event Port on the Routing window to your BCF port on the right.
Select Options / Pass Sysex
NOTE that sometimes this needs to be de-selected and then reselected.
Don't know why. I have asked Jamie, but he is a busy fellow.
Open the Sysex window by View / Sysex.. menu.
On this new window use File /Send Sysex File.
Select the file and the sysex should be sent to the BCF and you should see the sysex in the Output Monitor .
All the best
Royce