I assume you just want to use DVB-T (DTT) ...
technically the dit9719 and x300t are very similar, but I think no one found the JTAG port on the PCB of the dit9719.
with very good soldering skills, you might be able to wire up the JTAG directly on the CPU, but that is not recommended.
anyway, if you have that step done, then the next problem is the bootloader, which is most likely different (but similar) to
that of the x300t. the bootloader needs to be patched to allow running modified files.
then there is a last problem, which is that the application does not fully initialize if it cannot connect to the IPTV server.
the DVB-T does not seem to work correct if the application is not fully initialized.