Sony Today Released 11.0.A.4.27 For Tipo ST21i To Fix Echo Problem in the Phone, I just ran the update of 11.0.A.4.27 and it went through successfully. Folks who are facing the echo problem in Tipo, I recommend to update your phone software to 11.0.A.4.27 through Sony PC Companion.
Sony ST21i was updated with 11.0.A.4.27. You Xperia Device is now updated with the latest software, I love to see this message again and again..with the Jelly Bean Update for Tipo..But Sony let me down with a BIG no for Tipo.
Anyway..My experience with 11.0.A.4.27 is good and the echo in the tipo seems to be resolved with the version.Here are the update screenshots.
I feel i am the first to hit the sony server to get the update. Go get your phone updated to most awaited 11.0.A.4.27, post your finding about this version through comments section below.If you still find Echo in tipo you can check my previous posts