chmod 755 DEVICEWORKDIR/busybox

export PATH=DEVICEWORKDIR:$PATH

busybox mount -o remount,rw /system

for i in `ls -l /system/bin|busybox grep busybox|busybox awk '{print $6}'`
do
   if busybox test -f /system/bin/$i
   then
      rm /system/bin/$i
   fi
done

for i in `ls -l /system/xbin|busybox grep busybox|busybox awk '{print $6}'`
do
   if busybox test -f /system/xbin/$i
   then
      rm /system/xbin/$i
   fi
done

if busybox test -f /system/bin/busybox
then
   rm /system/bin/busybox
fi

if busybox test -f /system/xbin/busybox
then
   rm /system/xbin/busybox
fi

dd if=DEVICEWORKDIR/busybox of=BUSYBOXINSTALLPATH/busybox
chown root.root BUSYBOXINSTALLPATH/busybox
chmod 04755 BUSYBOXINSTALLPATH/busybox
BUSYBOXINSTALLPATH/busybox --install -s BUSYBOXINSTALLPATH
rm -r DEVICEWORKDIR/busybox