Sooo... let me reformulate my question:
I have a SNROM board. It supposelly had Castlevania 2 on it, but it's not working.
The game's case don't help much to identify it.
I would like to use this board to build a Castlevania 2 with this translation.
I've got to the vending machine, select "No CHR-ROM (assumes CHR-RAM)" and set "New cinematic prologue" to No. I have not touched the other options.
I got the patch fine, but when applied no emulator I've tried can run it.
I opened the resulting ROM in a hex editor, and the first 3 bytes are not "NES". I think it means that it has no header.
I tried to add a header to it, but all I get is a black screen when testing.
I'm using Lunar IPS to apply the patch. I have already tried with all the default options (eg.: have not changed anything on the vending machine, except the current language to english) and the patched file worked.
Can you please help me to get a valid ROM after aplying the desired patch?
Thanks in advance.