echo in conversation EHX 14.8.12

Kindly Alessandro do you have any solution for this problem?: when I make a call, who receives it hears a loud annoying echo ?

In my S-Plus I installed EHX V 14.8.12 but it is also a problem with earlier versions.
Many thanks in advance if you can give me some advice and help.

Wait next release but do a wipe data, and then flash it.

Ok many thanks Alessandro as always kindly.