downgrading stlink V2

[JulienD]

Hello,

I would like to downgrade STLink V2.

I went through this post :

https://community.st.com/s/question/0D50X00009XkhxWSAR/downgrade-stlinkv2-firmware-revision

I was able to get some old versions (thanks to contributors) but when I click on "device connect" of the downgrade app, it tells that "the content of stlink is corrupt".

Do you know a way to downgrade it anyway. I found a 6 pins connector footprint on the board which could be a swio port but how can I get the binary ?

Thanks

Julien