Here's how you can unlock the extended ROM on your MDA.

  1. Download this file
  2. Unzip it on your computer and transfer the cab file to your device
  3. Install the CAB file on your device
  4. After successful installation hold down the power button until you get a notice like this
  5. Press "Yes"
  6. Now press the Soft-Reset whole on the side (with the point of your stylus)
  7. Press and hold your power button until the device powers back up
  8. Enjoy your extended ROM.