Deleting the supplied software
You can delete the supplied software from built-in memory with the following procedure or by formatting your Walkman. If necessary, copy the data to your computer as a backup before deleting the supplied software.
If you use a Mac computer, copy the [FOR_MAC] folder to your computer as a backup if necessary.
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Connect your Walkman to your computer using the USB cradle (supplied).
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Follow one of the procedures below, depending on the type of computer you use.
Windows 7 or earlier:
Select [start] – [Computer] or [My Computer] – [WALKMAN] – [Storage Media].
Windows 8:
Select [Desktop] from [Start screen] to open [File Explorer]. In the [Computer] list, select [WALKMAN] – [Storage Media].
Mac:
Select [WALKMAN] in the sidebar of Finder.
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Delete the [FOR_WINDOWS] and [FOR_MAC] folder.