The Blofeld plugin can directly load prepared Blofeld user wavetables in sysex and midi file format.

However, certain requirements must be met when importing wavetables as audio files.

The classic wavetable format for the Blofeld is:
64 waves
128 samples per wave
Sample rate: 8 bits

The Blofeld plugin offers several settings for importing wavetables as audio files. If the number of waves is higher than 64, e.g. 256, use the “Full Wavetable Range” function, which imports only every fourth wave.

However, the number of samples per wave should be set precisely for this to work. There is a selection menu (32-4096) for this purpose.

The resolution of the file can probably also be higher than 8 bits (16-32 bits).