#backup SystemVersion.plist
cp -p /System/Library/CoreServices/SystemVersion.plist /System/Library/CoreServices/SystemVersion.plist.bak
#change product build version
plutil -key ProductBuildVersion -value 7C144 /System/Library/CoreServices/SystemVersion.plist
#Writing new value for ProductBuildVersion to /System/Library/CoreServices/SystemVersion.plist
#change product version number
plutil -key ProductVersion -value 3.1 /System/Library/CoreServices/SystemVersion.plist
#Writing new value for ProductVersion to /System/Library/CoreServices/SystemVersion.plist
#check firmware version number after change
plutil /System/Library/CoreServices/SystemVersion.plist
Firmware and Build Version
3.0 (7A341)
3.0.1 (7A400)
3.1 (7C144)
3.1.2 (7D11)
3.1.3 (7E18)
plutil -key ProductBuildVersion -value 7E18 /System/Library/CoreServices/SystemVersion.plist
plutil -key ProductVersion -value 3.1.3 /System/Library/CoreServices/SystemVersion.plist
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2 comments:
Exactly what I needed, thanks. I simply edited the plist file directly using Vim inside the Terminal app from Cydia.
Very slick trick, thank you it's really helpful. Vi always works, but plutil makes it much easier
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