Develop native app (c++) for Windows Phone 7

I would like to know that:

1. is there any tool to jailbreak / unlock WP7 ?
2. Is it possible to develop native app use C++ for W)7 after we unlock/jai开发者_如何学运维l broken to take root privilege ? Which tools should I use?

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There are such tools yes, but no. You cannot not build native C++ application on the Windows Phone 7 Series.