FTP does has its own umask so you are normaly unable to get the x bit
set for uploaded files. You might scp or rcp in case they are working.
In case not i would boot from tape or cd , go for maintenance shell and
set the required security settings on you file into /usr/bin . After
that that reboot and just restore the /usr/bin directroy structure from
your mksysb.


hth
Hajo