Do we have to patch the game with the version the readme says to use?

This is probably a commonly asked question. I got that Pokemon itch and someone pointed me towards Unbound as they say it is quite good. I downloaded the patch from the link provided and the readme says to use a certain version of the game to patch the hack in. And I just want to know if that is the version I absolutely have to use. Because for the life of me I cannot find it anywhere (not asking for it, just to be absolutely clear) and want to know if using a different version of the ROM would cause any issues. Or if any English version works