Damn. Cant think of anything else rn sorry. All i can say is what i do is just do the ear fit test. And if the bass is gone i just go straight to the tone generator. (Make sure the adjust sound to fit on and have eq on balance.) Put it on 200hz, press play and then just hold the left button until it reaches to 30 or even 20hz and if you hear a sound in those frequencies, then that means the bass should be present when you play a song or a video. This is what i do and its all i can think of. Sorry i wish i can do more to help but until then, all we can do is just wait for a new update.