Originally Posted by arbitercu
It is Stock 3:
As you wrote you flashed some other sound Mod. This changed system files within the ROM and kernel and thus leads to an error during the OTA process.
As @Mr Hofs
wrote this ROM is NO longer stock and you got to flash a stock nandroid using TWRP, after this re-flash stock recovery and then perform the OTA. You gonna see this will work!
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Retired: Desire (CWM, Cyanogen), Sensation (Unlocked, S-On, CWM, root), One X (Unlocked, TWRP, Cyanogen), One (M7) (firewater S-Off, TWRP, ViperOne), Moto G (Unlocked, S-On, CWM, CM11), One (M8) GER Silver (SunShine S-Off, TWRP, ViperOne 2.2.0).