I'm currently using SQL server 2008 SP3 10.0.5500.0 (2008 SP3) Express Edition
I've been trying to upgrade the build version from 10.0.5500.0 to 10.0.5538.0 but there is an error shown below when I used this KB2977321.
Error: There are no SQL Server instances or shared features that can be updated
Thank you.