This is how to get into update mode,
All you do is this,
1) Switch the player OFF using the main on/off switch.
2) Hold down the "MENU" button and keep it held down.
3) Connect the usb to the player.
4) Wait for about 10 seconds before releasing the button.
5) You should be now in "ROCK USB" upgrade mode
6) Then just start ConsumerUpdate and upload your firmware.
In case your system is missing the RockUSB driver you can download it here:-
http://www.mympxplayer.org/usb-drive...usb-df603.html
Here is an extensive thread on MP4nation about these players that may help if you run into problems, Good Luck!
http://www.mp4nation.net/forum/viewtopic.php?f=6&t=1967