I'm not sure I follow. It's the same way you find inversions of any other chord. E.g. for the first inversion, you have the 3rd at the bottom, for second inversion you have the 5th, etc. It's just in the case of diminished chords, the 3rd is a minor 3rd and the fifth is a diminished 5th. But if you know the notes in the chord, you can invert any chord.

I think Zaye means how to listen for it.

you have to hear the outer interval (lowest to highest): Root is the easiest: Tritone means Root Pos. Major 6th means Inversion. If you hear that Major 6th then listen to the top two notes: Tritone there means 1st Inv., Minor 3rd means 2nd Inv.

Hope that makes sense.

I suggest that instead of relying on intervals, you use the functional approach instead.

You sing the pitches you think go in the chord. Depending on whether you hear ti-re-fa, re-fa-ti or fa-ti-re relative to some imaginary tonic (do-mi-sol) you have your answer. It’s basically equivalent to hearing the upper chord tones of the V7 chord (sol in the root) resolving to the I

Thanks for your answers
I try not to use my keyboard when doing the exercices , i think it's the good way to dev my ears.
I use the pitches method but it seems that my ears are too bad :)
And about the interval , i'm very bad in the interval recognition.
Need more practice. I will continue till i got it
Thanks again for your help :)