The Internationnal Patch 1.02 is now available for the following countries, England, France, Poland and USA.
You will find this Secret Files: Tunguska 1.02 Patch at this special Deep Silver download site...click here and check on the left side of the page for the Internationnal...exe "link".
If you only want the SF:T , 1.02 Patch for the alternate ending, you will not have to replay everything. Just use the last saved game before the ending.
This 1.02 Patch will, also, address many technical aspects related to the installation of the game on a computer as, for example, issues with older systems and issues with laptops with onboard integrated graphic card. A few in game bugs have also been solved. Pay a visit to the Secret Files: Tunguska Forums to see about additionnal issues that have been also addressed and fixed.
It is also possible to find other download mirror sites by doing a search on the Net.