At this stage, you should have the files wrfvar_output and wrfbdy_d01 in your WRFDA working directory. They are the WRFDA updated initial and boundary condition files for any subsequent WRF model runs. To use, link a copy of wrfvar_output and wrfbdy_d01 to wrfinput_d01 and wrfbdy_d01, respectively, in your WRF working directory.