Hi Dinesh, in the post build script your path to .out file not correct
"${CCS_INSTALL_ROOT}/utils/tiobj2bin/tiobj2bin.bat" "../../../../../../../binary/armv7a/cgt_ccs/am335x/evmAM335x/bootloader/${ConfigName}/${ProjName}.out"
this is the path of boot.out, change this loaction where your uart.out