thanks hacker, i followed your instructions. i will tell you what i did after i have read your instructions,.First of course, i am really nervous, coz i really don't know what i am doing, i have test f=1100 and v=1.2GHz, with 3000 iteration,nothing happens, until i have reach the maximum that it will not turn dangerous, that is 1195 and 1.375GHz, with 6000 iterations,but still i am having problems with my music applications, now since i haven't experienced rebooting so i tried to bypass the warning signs, even if i really don't know what will happen next. I run the test at 1200 and 1.387GHz, I still feel the lagginess, then 1300 and 1.378GHz, and now i'm running 1375Mhz frequency at 1.378GHz voltage at 10000 iterations. Those settings are highly dangerous.My phone doesn't reboot even once after all the test I made. But still I am having problems with my music applications,And most of the time if you typed in the song in the search bar of music so fast and use the back button to delete the wrong spelling,It doesn't respond.and need to close the application over and over again.This happens with or without overlocking.I think my phone could not handle my 30GB songs, what's the use of a 64GB n9 if it will run slowly if you put more files on it, I think I should have bought the 16GB only, I have also faster n9 installed already. Another thing is my MESSAGE, it doesn't continuesly scroll up and down. Just a little bit of pausing for a while about 0.05 seconds. Can anyone have any suggestion on how will I make my n9 faster? Well the only solution for myself is to reduce the songs to 10GB, I know it will run smooth with that,with or without overlocking!! and now my remaining 50GB free memory would be useless. that would be for photos and for some other stuffs.

Now i am running at 1.375MHz with 1.3875GHz voltage. i want to try it to 1400 and 1.4GHz, since i didn't had any reboots for all the test but I think no one had ever tried it yet. so I better stick on it until someone could give me some other settings aside from making a high overlocking value, I just shared my experience here, Any suggestions? by the way thanks again hacker and thedead1440 and especially creamygoodness!!