macOS 10.14 mojave安装低版本iTunes 12.6.x

下载iTunes 12.6版本：https://support.apple.com/zh-cn/HT208079

安装低版本iTunes

利用脚本编辑器运行脚本安装低版本iTunes：

关闭SIP系统完整性保护

• 打开Mac终端输入命令：csrutil status

$ csrutil status

• 默认情况下是开启的

System Integrity Protection status: enabled.

• 重启电脑，按住键盘上面的cmmand+r，进入修复模式
  点击实用工具，选择终端
  

输入命令：csrutil disable

$ csrutil disable

• 再次重启电脑

• 建议这里记得安装完成后改回来，开启SIP和前面的操作一致，在修复模式下，输入命令csrutil enabled

$ csrutil enabled

打开脚本编辑器，将以下代码复制到脚本编辑器运行（卸载iTunes并重装）

set question to display dialog "Delete iTtunes?" buttons {"Yes", "No"} default button 1 set answer to button returned of question if answer is equal to "Yes" thendo shell script "rm -rf /Applications/iTunes.app" with administrator privilegesdisplay dialog "iTunes was deleted" buttons {"Ok"}set theDMG to choose file with prompt "Please select iTunes 12.6 dmg file:" of type {"dmg"}do shell script "hdiutil mount " & quoted form of POSIX path of theDMGdo shell script "pkgutil --expand /Volumes/iTunes/Install\\ iTunes.pkg ~/tmp"do shell script "sed -i '' 's/18A1/14F2511/g' ~/tmp/Distribution"do shell script "sed -i '' 's/gt/lt/g' ~/tmp/Distribution"do shell script "pkgutil --flatten ~/tmp ~/Desktop/iTunes.pkg"do shell script "hdiutil unmount /Volumes/iTunes/"do shell script "rm -rf ~/tmp" end if if answer is equal to "No" thendisplay dialog "iTunes was not deleted" buttons {"Ok"}return end ifset question to display dialog "Install iTtunes?" buttons {"Yes", "No"} default button 1 set answer to button returned of question if answer is equal to "Yes" thendo shell script "open ~/Desktop/iTunes.pkg"return end if if answer is equal to "No" thendisplay dialog "Modified iTunes.pkg saved on desktop" buttons {"Ok"}return end if

运行后根据提示卸载安装。

如果提示 iTunes Library.itl 错误，打开终端运行命令：sudo rm ~/Music/iTunes/iTunes\ Library.itl

$ sudo rm ~/Music/iTunes/iTunes\ Library.itl

或者：

display dialog "Please select iTunes 12.6 dmg file" buttons {"Ok"} set theDMG to choose file with prompt "Please select iTunes 12.6 dmg file:" of type {"dmg"} do shell script "hdiutil mount " & quoted form of POSIX path of theDMG do shell script "pkgutil --expand /Volumes/iTunes/Install\\ iTunes.pkg ~/tmp" do shell script "sed -i '' 's/18A1/14F2511/g' ~/tmp/Distribution" do shell script "sed -i '' 's/gt/lt/g' ~/tmp/Distribution" do shell script "pkgutil --flatten ~/tmp ~/Desktop/iTunes.pkg" do shell script "hdiutil unmount /Volumes/iTunes/" do shell script "rm -rf ~/tmp"set question to display dialog "Install iTtunes?" buttons {"Yes", "No"} default button 1 set answer to button returned of question if answer is equal to "Yes" thendo shell script "open ~/Desktop/iTunes.pkg"return end if if answer is equal to "No" thendisplay dialog "Modified iTunes.pkg saved on desktop" buttons {"Ok"}return end if

运行脚本卸载iTunes后，按照脚本提示选择12.6版本iTunes的安装包进行安装即可。

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