Fully decompiled, normalized and tested launcher from L2 Shrine project. Updater was written on WinForms with usage .NET Framework 3.5. This enough for running on the Windows XP. Special thanks to the author of this project for not using an obfuscator and for allowing me to borrow some “tricks” from the updater.
This updater does not contains Builder. Inside Web folder you can find the template for “update list”. This helps you create a simple tool for making a patch. Solution was made in Microsoft Visual Studio 2017.
Download source code: L2Shrine.com Updater