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there is a product out there called "aTV Flash" by FireCore.
I have used their products before on a 1st gen AppleTV and it worked great.
Not sure about support for 6.0, but it might be worth a shut to contact them and see if they can help you
 
Does anyone know how to jealbreak Apple TV 2 software 6.0 (6646.65)?😕😕😕

Can't yet.

The latest Seasonpass works with 5.2, untethered. It works with 5.3, tethered (firmware version 5.3 = iOS version 6.1.4, I think. But the latest firmware version for Apple TV is 6.0.1, which I think is iOS version 7)
http://support.firecore.com/entries/387605-Jailbreaking-101-Seas0nPass

No jailbreak for firmware update 6.0 yet.
(for clarification, see here for what Apple calls the "software updates", which are offset from the iOS version)
http://support.apple.com/kb/ht4448

Your next question will be if you can somehow downgrade from 6.0 to 5.2 or 5.3. I don't know the answer to that.
 
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