Hello ,
I have a cluster with CUCM and SUB with version 12.5.1.18900-40. I need to install a new SUB with same version of the PUB.
But when I search about it I can find that
Note
Because the 12.5.1.18900-40 build is a non-bootable ISO, it proves useful only for upgrades. You cannot use it for new installations. You may however install with the base version 12.5.1.10000-22 and apply 12.5.1.18900-40 as a patch during the installation.
Also I don't have the bootable iso for the base version 12.5.1.10000-22 .
My questions are
1- If I download the non bootable iso 12.5.1.18900-40 and then convert it to bootable and install it , is there any risk for upcoming TAC support ?
- How can I download the bootable base version 12.5.1.10000-22
- Can see that TAC recommend to install subscriber with upgrade during installation so could you please give me the steps ?