here is the complete text following execution of brigadier.exe ....
C:\Users\name\Downloads>brigadier -m iMacPro1,1
Using Mac model: iMacPro1,1.
Model supported in package distribution file at http://swcdn.apple.com/content/downloads/41/17/091-14331/br9prfd71k86fkwgx421ept 2s931s0bv2p/091-14331.English.dist.
Distribution 091-14331 supports the following models: iMacPro1,1.
Making directory C:\Users\name\Downloads\BootCamp-091-14331..
Fetching Boot Camp product at URL http://swcdn.apple.com/content/downloads/41/17/091-14331/br9prfd71k86fkwgx421ept 2s931s0bv2p/BootCampESD.pkg.
100.0% 637059072 / 637054345 bytes
Extracting...
Calling 7-Zip command: C:\Program Files\7-Zip\7z.exe e -oc:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o -y c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\BootCampESD.pkg
7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
Processing archive: c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\BootCampESD.pkg
Extracting Scripts
Extracting Payload
Extracting PackageInfo
Extracting Bom
Extracting [TOC].xml
Everything is Ok
Files: 5
Size: 637135692
Compressed: 637054345
Calling 7-Zip command: C:\Program Files\7-Zip\7z.exe e -oc:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o -y c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\Payload
7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
Processing archive: c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\Payload
Extracting Payload~
Everything is Ok
Size: 636159488
Compressed: 637047101
Calling 7-Zip command: C:\Program Files\7-Zip\7z.exe e -oc:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o -y c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\Payload~
7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
Processing archive: c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\Payload~
Extracting .
Extracting .\WINDOWS
Extracting .\WINDOWS\system64
Extracting .\WINDOWS\system64\AppleOSSMgr.exe.split
Extracting .\WINDOWS\system64\AppleOSSMgr.exe.split\en.lproj
Extracting .\WINDOWS\system64\AppleOSSMgr.exe.split\en.lproj\AppleOSSMgr.dll
Extracting .\WINDOWS\system64\AppleOSSMgr.exe
Extracting .\Library
Extracting .\Library\Application Support
Extracting .\Library\Application Support\BootCamp
Extracting .\Library\Application Support\BootCamp\WindowsSupport.dmg
Everything is Ok
Folders: 8
Files: 3
Size: 636157812
Compressed: 636159488
Calling 7-Zip command: C:\Program Files\7-Zip\7z.exe x -oC:\Users\name\Downloads\BootCamp-091-14331 -y c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\WindowsSupport.dmg
7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
Processing archive: c:\users\name\appdata\local\temp\bootcamp-unpack_d93m9o\WindowsSupport.dmg
Extracting 0.Apple_ISO
Everything is Ok
Size: 1050873856
Compressed: 635919932
Done.
I cannot locate the Bootcamp.msi file.