>>What Backup or ?
>>this posibible to Decomple Complete
>
>If you own the application and your are the developper of the application, than you should have a backup of the source code. No need to decompile. But if you are not the programmer that created the application, then what you are trying to do is illegal.

And here we go into the fine points... as in the situation where the customer claims he owns the code, the original programmer is gone, the app was custom made or is abandonware, no new version available on the market, support dead. What then?