Combat Arms utilizes the Nexon Game Manager to patch it's files. The information about what version Combat Arms should be running is given via TCP from the main server durring the initial splash screen. NGM uses this information to dermine which PatchData_XXXX.XX Folder to use for the current patch.
From there the client's current files are checked agains the Combat Arms files.nfo2 file list to determine which files need to be downloaded and where they can be downloaded from.
Once the process is complete, the game is restarted.
Pages in category "Combat Arms patch process"
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