Custom bootsound for Galaxy 3 (i5800/5801)
1.Download the sound file from here
2.Transfer the downloaded file to SD.
3.Using root explorer go to SD card and long press the downloaded files and select copy.
4.Then go back to SYSTEM>>ECT
5.Hit the PASTE button
it will ask do you want to replace the file.. Press OK
6.Reboot and hear the sound while boot..
This method is safe and there is no way to brick your phone…
Here is the youtube video Preview http://www.youtube.com/watch?v=LwPtQD3FZwo
This is the shutdown sound i’m working now: http://www.youtube.com/watch?v=AQfZFbldpZw