You have raised a few points and the following are the answers:-
QUESTION -- "I currently have configation tool 1.2, am I unable to control 3rd party products directly using this version."
ANSWER -- You will need a later version of the Beo5 Configuration Tool to allow 3rd Party products to work correctly.
QUESTION -- "If I can find a copy of 1.32 will this allow me to control my Humax HD without an IR cable"
ANSWER -- YES, provided you have made an XML file for the Humax HD or someone has provided it to you.
QUESTION -- "If I can find a copy of 1.32 will this upgrade the firmware of my Beo5 at the same time."
ANSWER -- YES, but you would need to get version 2.2
For further information I suggest you review the Beo5 web pages HERE