What can I do if the device is not recognized by a Mac computer?
There may be issues on recognizing USB devices, including MP3 / MP4 players, by a Mac computer after the OS is upgraded to version 10.7.2 . This can be solved by resetting PRAM (Parameter Random Access Memory) of the computer:
- Shut down the computer.
- Locate the following keys on the keyboard:
- Turn on the computer.
- Before the gray screen appears, simultaneously press and hold [COMMAND], [OPTION], [P] and [R] buttons until you hear the second startup sound.
- Release the buttons.