Hi Senso,
The question is: do you want to use Octave?
If you want to use Octave, you need to reinstall the firmware (.spk) that was provided with your mangOH Yellow, from mangOH Yellow website (https://mangoh.io/mangoh-yellow-resources-software). Note: WP77xx generic releases are pure module FW: they don’t contain Octave on them.
Also, in that case, I suggest that you change the category of your topic to “Octave”.
.Thibault.