To update the firmware on your M4508 to enable DRM Free AAC playback, you will need to:
- First, check to make sure which model your MP3 Player is; either the M4508-B or the M4508-D.
- Connect your device prior to installation.
- Click Here to be redirected to the RCA Downloads Page.
- Click on the AAC Enabled Firmware Update/Restore Utility link for your specific model.
- Select "Save" and select the appropriate folder to save the installer.
- Run the downloaded installer and follow the instructions to complete installation.