For those that are on hboot 2.15 and having headphone issues, did you remember to flash Turge's firmware package a 2nd time if the error message comes up the 1st time? If you only flashed it once, it would have only updated hboot, and not the other modules, including the media module (which may be the culprit).
You can check the radio, if it was updated to 1.31, the entire firmware package flashed. If you are on a different radio (and haven't been messing with the radio), then only the hboot flashed.
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Phone: HTC One X (AT&T version) Rooted, Bootloader Unlocked, S-Off
Tablet: Samsung Galaxy Note 8 (WiFi only) Rooted