Microsoft has a Genuine Software checker for Windows Phone 7; complicates custom ROMs

Although in that location accept been reports of people porting over WP7 to the HTC HD2 and some churr of people beingness able to brand ROMs  (though not load them), at that place may even so be one last hurdle that could be very difficult to overcome: PVK.

PVK are the private keys Microsoft plainly uses to sign off on the Os that is also tied to the hardware. Specifically, some aspect of the Os looks for and then pulls these keys from the device motherboard for verification. If the keys cannot exist found, the motherboard must be replaced or serviced. While elements of the phone/OS might still work without the PVK key, core elements such every bit Xbox, Marketplace, Windows Alive or Zune...basically whatever "cloud service" will non.

The challenge to developers/hackers would be to circumvent this security, much like folks take managed to become effectually Microsoft's Genuine Software checker for Windows 7 and Office products. No easy task, we imagine.

In improver to  the above prototype,  there is an accompanying "Service Advisory" on one of the HTC internal sites that reads:

Description:

This Service Advisory aims to resolve invalid PVK or PVK missing issue for whatsoever returned WP7 units

Condition(south) to follow this service informational:

1. When customer complains near tin non access Microsoft services such as XBOX, Marketplace, Windows Live and Zune on the WP7 devices.

ii. When ASP performs diagnostic program test, ASP needs to follow the beneath repair actions if the diagnostic program detects invalid or missing PVK.

If the PVK is invalid or missing, in that location will be message on device equally following when user attempt to login to Windows Live service.

To all of this we say good on Microsoft for throwing down some serious security, but alas, the ROM community now has a challenge ahead of itself. Of course, this is probably more motivated by piracy concerns than ROM cookers, but we imagine Microsoft welcomes that as a wanted side effect equally well. Combined with the Xbox Alive security (encounter earlier coverage), cracking this Os broad open may exist far off.

Thank you, Conflipper, for the info

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Source: https://www.windowscentral.com/microsoft-has-genuine-software-checker-windows-phone-7-complicates-custom-roms

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