I have and HTC One S [S4] with viper 2.2.0 and briked kernel ( version 170700 ) and I have open recovery twrp 2.6.3 ( also I'm still S-ON ), I have recently changed the battery of the phone with a 2100 mah battery ( from the One x+ ). [B]I don't know if this started immediadly after that I changed the battery [/B ]anyway I have been reported that when I make calls people from the other side hear me with a very very low voice. Never had a problem like this. I don't think that I have made some hardware damege during battery changing as I have just removed the 2 mini covers up and down without removing any hardware component ( just the 2 mini covers and the big alluminium case ). I have even try to wipe all data, cache davilk and external memory and then I have flashed the ROM again but nothing. Any idea??
I could try to revert to stock but actually I don't even remember how to do that! It is sufficient to flash the RUU ?