In some cases, the CRS crashes while updating the database. Deleting this incomplete download should allow you to update the database's latest version.
You can delete the partial database update with the following steps:
1. Start the CRS.
2. Go to the "Update management" page at the settings menu (right upper corner).
3. You will see a yellow text in the lower right corner: "Reset". Double tab on that text.
4. A small menu will open with three options, select "Only remove pending updates".
5. Restart the CRS.
You should now be able to restart the update procedure by searching for the latest updates again in the settings menu