I enabled radio on my iPod Touch 2G...now I can't turn it off

I was breadboarding a microphone for my iPod Touch 2G using the headphone/mic jack as an input. I made a simple circuit to power the mics with an additional 2.4V (I suspected the PIP wasn't enough for the 4 mics I was using) but I left out the DC blocking caps on the audio out, and I plugged it into my ipod. I am a bad "engineer"; actually I'm not an engineer at all, I am a guesser and checker. well, now my recordings (with voice memos, blue fire, and epiphany) are all full of static. I thought I had burned something up, but I didn't know what; the mics are still solid (they work in my wife's identical ipod Touch). Then I tried recording again and again with just the PIP, no powering circuit, and when I listened to the static filled recordings I realized I can hear voices in the recordings. changing rooms in my house reveals these voices to be a country music station, and there is no country music on my ipod or being played within earshot of the mic. I can't change the station either.
If it wasn't the added bias voltage (present for about 10 seconds), it could have been a long-term short in one of the mics. I didn't realize one of the mics was shorting out until the music player kept coming on in the middle of my recordings, so it may not have been the added voltage that did this- it could have been a short to ground of the mic audio contact.
I understand that the bluetooth chip in these iPods has a radio tuner, and I believe I just accidentally activated it, one way or the other. But I want to record sounds through the mic, not radio, so does anyone have any ideas on how to re-disable the radio?
Message was edited by: vtjonny

Dave and Razor,
I tried the hard reset but I haven't had time to try a full restore, thanks for the suggestion. I'll do it this weekend. I am tempted to just open this ipod up and physically disable the bluetooth chip, but I may just go ahead and make a line-in adapter and microphone preamp for the dock connector rather than go through the minijack.
But if anyone can figure out how to tune this radio, its in there and definitely can be enabled...

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