Error 170 when installing 2.2 (Froyo) update: T-Mobile myTouch Slide

If you are attempting to download and install the Android 2.2 (Froyo) software update for the myTouch Slide and it fails with Error 170,  follow these steps:

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  1. Dismiss the error message on the PC.
  2. Unplug the device from the PC.
  3. Take the battery cover off and remove the battery from the device.
  4. Replace the battery and battery cover.
  5. Power the unit back on.
  6. Once the device is fully booted and at the Home screen, plug the device back into the PC.
  7. Drag the notification bar down from the top of the screen.
  8. Touch Select to change USB connection type
  9. Select HTC Sync
  10. Touch Done.
  11. Locate the system update file on your PC named T-Mobile_myTouch_3G_Slide_Software_Update_2.15.531.2.exe.
  12. Double click the icon to start the update.
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  13. Continue with the process to The specified item was not found..