what is the best and right way to patch a file in inno setup using xdelta

[maybeknow]

Originally Posted by Cesar82

It is necessary to include XDelta3.dll in your installer.
You can create the code by copying parts of the code included in the DiskSpan GUI 2.0.0.2 example script.
ISxDeltaExtract only works if you create the patch using XDelta with the parameters:

MakePatch.bat

@echo off
set "OldFile=File_Old.txt"
set "NewFile=File_New.txt"
echo.
xdelta3.exe -e -9 -S djw -vfs "%OldFile%" "%NewFile%" "%OldFile%.diff"
echo.
echo.Press any key to exit.
pause >nul

thank you, the DiskSpan GUI 2.0.0.2 is a great example, but I think maybe its better for me to follow the original example of ISDone, because i want to use it on a simple inno setup script (nothing fancy)
but something that I still not sure about is how can I show the progress of it in installation page of my installer...