The csb6566.exe file you have requested: Official Patches / Beta 6.5 > 6.6 Updater Patch - 2.03mb is not available. Perhaps try browsing all files for the game Counter-Strike and upload any files you want to share or are missing. This is the only information we could locate:
This file will upgrade your 6.5 to 6.6. Only use this patch if you have 6.5 already installed.