I followed that but still get errors, though at least it seems to sort of read it.Problematic or not, you can always use this guide to get SDXC working without having to update
That adds exFAT support but does it also mean SDXC support too? I'm on 3.0.2 and I get the impression after patching that it's not fully supported still - I can view stuff but not open my XCI title and I get errors about reading the card (200GB)