1. Sebastian Larrea's Avatar
    I recently updated my Lumia 630 (Admitted) 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! Maybe it's the PC (Windows 8.1) not the phone?
    Thanks in advance!!
    02-23-2015 04:09 PM
  2. MDK22's Avatar
    make sure you have the latest version of Windows Phone Recovery Tool (s/b ver 1.0.6) ...

    also noticed when I installed WPRT - LSRT was non-functional, they probably share drivers, with conflicting versions.
    Thus, if you have both, you may need to uninstall one of them.
    02-23-2015 04:21 PM
  3. Alain_A's Avatar
    why are you asking the same question as yesterday? What about the question I had asked you??

    no point to re-ask in a new thread...just saying

    02-23-2015 04:27 PM
  4. Alain_A's Avatar
    have you done what MDK22 said??????

    when I did revert, I had no problem, although, I only had one version of LSRT tool on my computer
    02-23-2015 05:33 PM
  5. juanitoriv's Avatar
    I'm ready to do this also. 10 is irking me.
    03-01-2015 02:05 PM

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