Copy the HTC Sync installer from the storage card to your computer and use it to install.
Note:
- The HTC Sync version in the storage card that came with your phone can be installed on a computer running Windows 7, Windows Vista, or Windows XP.
- HTC Sync requires USB 2.0 on your computer to connect and sync with your phone.
- For trouble-free installation, first quit all running programs and temporarily exit from your anti-virus program before you start installing HTC Sync.
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Connect your phone to your computer using the supplied USB cable.
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On your phone’s Connect to PC screen, tap Disk drive, and then tap Done.
On your computer, the connected phone is recognized as a removable disk.
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Navigate to the removable disk and open it.
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Copy HTCSync.exe to your computer.
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After copying, unmount the removable disk (that is, the connected phone) as required by your computer’s operating system to safely remove your phone.
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On your computer, double-click HTCSync.exe and follow the onscreen instructions to install HTC Sync.
After installing HTC Sync, the HTC Sync icon 
is added to your computer’s system tray (check the bottom-right side of your computer screen). You can double-click this icon to open HTC Sync.