I cannot provide direct download links for specific updates like KB30385346 for SCCM 2409, or for SCCM versions 2503 and 2509. However, you can find updates for Configuration Manager by using the service connection point at the top-level site of your hierarchy. For more information on installing updates and their availability, you can refer to the relevant documentation.
References:
- Checklist for installing update 2409 for Configuration Manager
- Checklist for installing update 2509 for Configuration Manager
- Updates and servicing for Configuration Manager
- Understand and troubleshoot Updates and Servicing in Configuration Manager
- Checklist for installing update 2503 for Configuration Manager