2 Yamaha models. Find yours below, or send us a hack if it's missing.
This hack should work on all Philips DVD players as of 06/01/2001 with any firmware version, and other similar models by manufacturers such as Grundig, Marantz and Philips.
Send the infra-red code RC6 (aka Codeset 4, Key 235) to your player. You can do this with a OneForAll
Multi-Region Hack:
Press the Open button on your DVD-player to Open the drive tray
Using the remote press 9 9 9 9 on your remote control
Press the 1 button on your remote control for region 1, 2 for region 2, and so on, or 0 for multi-region
Press OK and the tray will close
Reset the unit by powering Off and then back On again