The nightvision_upgrade_fix_1.1.zip file you have requested: Clear Sky / Mods / Singleplayer / Nightvision Upgrade Fix - 15.14kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
This is a fix for several suits of armor using incorrect night vision upgrade data. Now green will always upgrade to blue. This version corrects all upgrade text in addition to the upgrades themselves. It has been tested and confirmed to be savegame compatible and should work even if you have upgraded your armor before installing. Please post below if you encounter any problems.