Upgrade from 4.1.7 to 4.1.20

[Duhaime Johanne]

hello
 
I would like to upgrade from 4.1.7 to 4.1.20 on Solaris 2.9. I have
looked at the upgrade section of the doc. But I can only see upgrade
from 4.0 to 4.1. 
In the lists and forum, I have seen people doing the almost same upgrade
(4.1.x to 4.1.y) having problems. 
 
My question is : do I have to follow the upgrade procedure from 4.0 to
4.1 or can I juste installed the new binaries? We are not ready yet for
the version 5.
 
Thank you in advance.
 
Johanne Duhaime
[EMAIL PROTECTED]