I am also interested. I'm currently at 10.0.15063.2 and getting the 0x80070273 error. I've seen your recommended "fix" on XDA-Developers and have dabbled with it, without success. First, what version of Interop Tools did you use, and where did you get it? From Microsoft, or somewhere else? Second what value did you use for the {PROCESSOR_NAME} parameter? In a post, it was recommended to use QC8960 for the 920/925/1020 phones. Dose this work for the 929? I'm also trying to work with Windows Phone Internals 2.4, but I haven't gotten it work either. Any help would be appreciated.