[Q] Installed Modem....shouldn't have installed modem. topic

So the other day I tried to install a new modem on to my phone. I'm running CM12 on an S4. (MDL bootloader)

I installed an NH7 modem...and it worked, and surprisingly I DO get better reception.

Except now my sound doesn't work...and I can't watch videos.

Any ideas on how to fix this?

xda-developers