This tool shows how to calculate the update XML link for any games. All credits go to Proxima.
mkdir build && cd build && cmake .. && make
This simple tools supports an interactive mode and one command line parameters. For interactive mode start it like this.
./vitanpupdatelinks
For non-interactive mode start it like this:
./vitanpupdatelinks -t PCSA00007
The embedded sha256 calculation library comes from here, I've badly stitched it up in this repo so don't use it for other stuff.