I´m new here, so I decided to do(write) something usefull
Many of you may have problems with patching the Asian version of resident evil 4 (biohazard 4) ´cause the oficially patch refuses to install.
Here´s a little guide I made
1 So first of all install Biohazard 4, full install
2 Then download the asian to european patch, and install it (not official, found via google)
3 After that, it will create a EXE-ORIGINALE folder in your game directory, with the original exe in it. Copy the original exe from that EXE-ORIGINALE folder to the main folder which will overwrite the one updated with the patch.
4 Go to your start menu->run->regedit, the go to HKEY_LOCAL_MACHINE\SOFTWARE\CAPCOM\biohazard 4
and rename it to HKEY_LOCAL_MACHINESOFTWARECAPCOMResident Evil 4
5 After that, use the EU patch and enjoy the updated game