The most recent Connections 5.5 Wizard package do not contain the sql scripts for updating Homepage from 5.0 CR4 to 5.5.
The following documentation link states the below (excerpt) in step15 to update Homepage to the most recent schema.
If schema version is 479, then enter the following commands:
db2 -td@ -vf upgrade-50CR3-50CR4.sql
db2 -td@ -vf upgrade-50CR4-55.sql
But the sql scripts, upgrade-50CR3-50CR4.sql and upgrade-50CR4-55.sql, are not found in the wizard. The 2 noted scripts are not part of the 5.5 wizard scripts as you can use upgrade-50CR3-55.sql which should be in the updated wizard package. This script can be used because there was no schema changes for HOMEPAGE from 50CR3 > 50CR4. However the scripts 50CR3-50CR4.sql and upgrade-50CR4-55.sql were added to the 5.5 CR1 package (126.96.36.199-IC-Multi-CR01-LO88602).