If you are looking for the decompiler itself, visit https://github.com/jindrapetrik/jpexs-decompiler
List of issues
: The issue tracker is now writable again and logged users can download files too. But note that our support is very LIMITED.
#1350 How do I save modification to embedded binary data
I can't save modification to embedded binary data inside swf file. The decompiler is able to decompile it(from hex to swf) but I can't save anything after modification. Decompiler shows that it is saved, but upon reopening swf file the changes are gone.
You first press save in inner SWF, then you must select outer SWF and press save.
In nightly 1805: on BinaryData SWF save, parent SWF is saved, so there should be no more problems with saving.