@ECHO OFF
echo Waiting for the process iFilter.exe to exit...
:waitforpid
tasklist /fi "imagename eq iFilter.exe" 2>nul | find "iFilter.exe" >nul
if %ERRORLEVEL%==0 (
    timeout /t 2 /nobreak >nul
    goto :waitforpid
)

echo Process Quit, updating package!
del /q ifilter.exe
rename iFilter_new.exe iFilter.exe
START iFilter.exe