You must configure the "launcher_config.json" url in MainWindow.cs and SplashScreen.cs
In launcher_config.json you need to make necessary settings to use the launcher, see the explanation of each json tag:
version = The version of the client, represented as "major.minor.patch".
replaceFolders = Whether the updater should replace the client's current folders
folders = An array of objects representing the client's folders, each object has the key "name"
clientFolder = The name of the main client folder, represented as "Tibia"
NOTE: Set it to "false" or only "" to not use the client folder, so everything will be added to the main folder
newClientUrl = The URL where the new client version can be downloaded from
executable = The path to the client's executable file, represented as "bin/client.exe"
The download will be done whenever the client version changes in the launcher_config.json file that you set from the url.
See the last client release for manual download: https://github.com/dudantas/tibia-client/releases/latest