There are various versions of Prime Infrastructure out there, and upgrading to 1.3 may get a little confusing. I hope this document will make this transition a little easier.
Here is some information that should help from the release notes:
If your existing system is...
Download this point patch file
Cisco Prime Network Control System 1.1.0 (22.214.171.124)
Cisco Prime Network Control System 1.1.1 (126.96.36.199)
Prime Infrastructure 1.2 (PI 188.8.131.52)
Once the “existing” version has been updated to the right patch as per the matrix above, you can then load the following patch to upgrade to 1.3:
(Look for “PI-upgrade-bundle-184.108.40.206.tar.gz” – last row in the list).
If you are run into any version that is not covered here, please leave a feedback and we will update this document.