2 versions of Installation Manager on the some host (windows)
2 answers
You cannot install 2 versions of IM on the same machine, unless they are installed in user mode, not admin mode. See: http://pic.dhe.ibm.com/infocenter/install/v1r7/topic/com.ibm.cic.agent.ui.doc/topics/c_admin_nonadmin_group.html
I'm unclear as to why upgrading IM from 1.6.2 to 1.6.3 is not easy. Instructions for upgrading IM can be found here: http://pic.dhe.ibm.com/infocenter/install/v1r7/topic/com.ibm.cic.agent.ui.doc/topics/r_install_im_overview.html. What are the particular issues you're finding when you try to upgrade IM?
I'm unclear as to why upgrading IM from 1.6.2 to 1.6.3 is not easy. Instructions for upgrading IM can be found here: http://pic.dhe.ibm.com/infocenter/install/v1r7/topic/com.ibm.cic.agent.ui.doc/topics/r_install_im_overview.html. What are the particular issues you're finding when you try to upgrade IM?