The download page has been moved for easier customer use.
UIM 23.4 and above
Go to Broadcom Support Page.
Log into the page
Click on Downloads on the left menu section
In the search field type "unified"
You should be at the UIM download page.
Select Solutions
Select the upgrade option.
Select 23.4
select the CU version
You will now be at the actual CU page.
Before you start please review this KB and open a case with support to have your upgrade plan reviewed. Then a week before the upgrade, please open a hot site request.
Please read all the instruction on both download pages, you will need to download both the UIM files and the OC files.