Recording data to Casio CTK-900 synthesizer via Midi port. What software to use?

Question

MIDI

Good afternoon.
It was decided to study music.
I bought a Casio CTK-900 from my hands, but without a disk. Quite old, as I understand it, but in good condition externally.
The instructions say that you need to copy the file to the device to reset to factory settings.
How to do it via midi (DIN5) cable?
What program to use? .I did not find any information on the Casio website. Apparently it was too long ago.