New Fiori B2B client app icon

Does anyone know how to get the new Fiori B2B app icon in native resolution?

I am talking about this one.

We need to exchange the icon within our Mobile Device Management (MDM), deleting and readding the app would uninstall it from all iPhones involved.

Since Fiori Client is not available anymore publically, I do not know how to get the original one in 512x512 Pixels.

Any ideas?

Thanks and kind regards,
Jens