Hi,
Based on your description, you want to upgrade the SCOM 2019 to UR6.
You can follow the supported installation order:
- Install the update rollup package on the following server infrastructure. Note: Management server or servers can be updated by using either the msp or simplified management server patching user interface.
- Audit Collection Services
- Web console server role computers
- Gateway
- Operations console role computers
- Reporting
- Apply agent updates.