Dear,
You should use your original music player to set ringtones
1.Enter the music in the home page
2.Press the music which you favorite for a 3 seconds;
3.Then the screen will turn up a small list, one option is" Use as phone ringtone"
Thanks for the help, but unfortunately this did not solve the problem. I can not replace the ringtone on Umi Touch right now. The second OTA update did not help.
Dear,
Please follow on these steps:
Settings-->Sound¬ification-->setting icon on the right of "General"-->Phone ringtone-->choose that ringtone you prefer