MyHOME Server1 firmware update - where to find versions between 02.11.xx and 02.82.xx?

Good afternoon,
Does anyone know how to do a firmware update for Myhome Server1? Because it's a disaster, I have firmware 02.11.xx which is too old, and I can't switch to the new control application, and Bticino doesn't help. I found firmware 02.82.xx, which is too high. Where can I find lower versions, because I have to do step by step
Thank you in advance for your help.