You can finally download the Tzar patch from v1.0 to v1.01 from here . To apply the latest Tzar patch when you have version 1.0, you need to:

1. Download the patch from version 1.0 to version 1.01 from here and run it
2. Run Tzar and when you reach the main menu click quit. (this step is required)
3. Apply any later patch that requires version 1.01 including the version 1.10 patch