Don't duplicate kexts; if you must copy them anywhere, stick to /L/E. Don't go off scale in desperation.
Obviously, the patched DSDT goes to the patched folder, unzipped as "DSDT.aml". If the DSDT device id injection does not work, try to add your card id 14e4:43b1 in the Broadcom kext. What SMBIOS do you use by the way?
Everything is explained in this thread.