Update: You own me a pint, n350z!
Get iTunes81.dmg
Mount it
View iTunes.mpkg Package contents
Browse to Contents -> Resources and View AppleMobileDeviceSupport.pkg Package contents
Browse over Contents and copy Archive.pax.gz file to desktop
Double click desktop copy of Archive.pax.gz
Jump to newly created folders System -> Library -> PrivateFrameworks -> MobileDevice.framework -> Versions -> A -> Resources
Guess you know what to do from this point on
BTW, do not forget to unload usbmuxd using
launchctl unload /System/Library/LaunchDaemons/com.apple.usbmuxd.plist
(replace unload for load to bring it back after you copied it).
Cheers
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