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Is it possible to change the Bluetooth UUID (the 128-bit value) on my iPod (Currently running iOS 5.0)? or is this a factory locked value?

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Without Cydia, i don't think Apple allows that. So No, not on a non-jailbroken iPod – funktor Apr 3 '12 at 10:01

No it is not possible. No known private API or jailbreak methods to do so AFAIK.

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The UDID is locked, but it is possible to spoof a UUID, as for an Bluetooth UUID, I'd think so but I'm not sure there's anything readily available i.e. in Cydia to do so, only a general phone UUID spoofer.

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