Connection problem!
 

Hello,i need some help please.
I upgraded my Titan to 3.16 but i had many connection errors and signals were lost very often.Signal quality was very poor.
So i decided to downgrade my Titan and relocked successful.
I try many rom and radio versions(Radio v1.32,1.40. Stuck 2.17 ROM) but connection error was not fixed!
Help me. I need working stuck rom.