Appendix L
Firmware Upgrades
This section applies only to the WDP P11/12 and the WDP P01, the separate external box decoder models. It does not apply to the Integrated WDP Models.
Occasionally it will be necessary to get firmware fixes for problems discovered with the external WDP Reader, especially in the early stages of each advance in development. This is accomplished replacing the EPROM, a chip which is to replace the similar chip on the board of the WDP's decoder box. The EPROM chip on the board is labeled with a white paper label to indicate the firmware version and to communicate the "Copyright Notice".
To replace the EPROM, remove the cover to the WDP decoder box according to instructions in Appendix A (see the diagram below).
unscrew
tilt screw and pull up to open lid
If you have a Integrated models of the WDP, you will have to send the unit back for a firmware change at the factory.
Remove the EPROM by gently prying with a small flat head screw driver
Eprom
Worthington Data Solutions
79 WDP 5207
