I don't know if it's related, but now that I think of it : I've been downloading some pedalboards. And since then, the mod duo was only rebooting with the "kemper" one if you see which one I'm talking about.
Yesterday, after the update, I tried to delete it, and couldn't. I tried to delete an another pedalboard, and couldn't.
Today, the mod duo was stuck on the logo screen, and you know the rest !
Hope there's a "simple" way to resolve my problem
I'll update tonight if something happens !