Are you sure you don't damage mic?? Try to change Mic again, but use prechiter, and cheat PCB around mic (try to not cheat a mic!!). It's a full-digital mic, so we cant replace it with just dynamic mic. If you're sure your mic is good sold, and Emif mic is good too (recommend make 3 signal jums, for sure), than you should make make 2-line jumpers on mic switch (watch on schematic). But in my phone it was just a new mic, killed by me
(too high temp). I wish you luck!!