At the end of the FAQ list you find all manuals and downloads.

How to send the BlofeldV125.mid to your Blofeld?

On mac OS, you can send a MIDI file easily by using the free tool “SysEx Librarian.” For Windows you can use “MIDI OX,” which is also free.

You also can send it with a DAW like Cubase, Logic… (This procedure won’t work with Ableton Live and Bitwig, as these DAWs don’t support Sysex data). Connect your Blofeld through USB or MIDI to your computer. Load the .mid file into a MIDI track of your DAW and play it back to your Blofeld. Reduce the playback speed to 80 bpm and activate transmission of Sysex data, if necessary.

Alternatively, you can use Spectre. Spectre is available in the download section at the end of the FAQ list. In Spectre, click on Audio/MIDI and select the MIDI out connection where Blofeld is attached to. Now click onto Upgrade… in the main window of Spectre and select, which .mid file you want to transmit.

You can also find the download for Spectre below the FAQ list.