hi. I just want to say that hacking my RH10 worked fine... but on different numbers the unit I have is a secondhand that surely is an European model. and of course the customized EQ was disabled. I entered 0113, just as you suggested, and changed it to ~01. now I have both custom1 and custom2 and editing via the recorder is possible as well. I hope nothing wrong happened but it works just like before the change. anyway thanks you all for your help! now it's much better