You can download the Samsung GT-i9060 stock ROM with one of the Samsung firmware update tools. The Samsung update tools are free and developed by people on GitHub and XDA-Developers. Most of the tools do the same thing as one another so it doesn’t matter which one you use. They will all download the Samsung firmware directly from Samsung’s servers, eliminating a middleman that you no longer have to trust. The only thing you need to put your trust in is the firmware update tool, which is easily verified on its official GitHub and XDA threads.