My Windows phone recovery tool is not working, how can I get it working again?

  • Thread starter Windows Central Question
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Windows Central Question

Windows Phone Recovery Tool is not working!

I recently updated my Lumia 630 to Windows 10 TP but now i want to go back to Cyan/Denim. The thing is that both Windows Phone Recovery Tool and Lumia Software Recovery Tool gave me an error.
The WPRT recognize my Lumia but when is "Reading phone information" it says Unknow error ocurred...

Value Cannot Be Null.
Parameter Name: string

Don't know what to do to downgrade!
Thanks in advance!!, sorry for my english.
 

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