Have you already tried patching the Korean ROM with the Japanese Rumble IPS patch anyway?
Unless the Korean patch somehow overrides the rumble patch, it should still work. (I don't have an EZ Flash Omega DE, so I can't test this.)
Anyway, this is an xdelta patch for the Korean translation (use No-Intro Japanese ROM with MD5 D571970F19FAFDBCDDDB71A02563317E
).
The website for the translation is dead, so this is pretty hard to find.