The problem isn't with the DBI, but your update file or CFW.
I repeat: there are absolutely 0 problems with any working update/dlc/game files with properly configured console. Ever.
Sorry, but you're perfectly wrong. Every and literally all working updates and/or DLCs are installable via DBI for now. Check your cable/installable files/system/sigpatches/soft version/etc.
@xXWILLIAMXBARROSXx
Please, add a question mark to the title of the topic, or something like "An Idea about bla-bla-bla" or "My thoughts about bla-bla-bla", or "I want to make bla-bla-bla", or "It would be good to make a bla-bla-bla".