Instructions for upgrading PDL firmware (also available on page 14 of the PDLCONF User Guide):
- Download the PDL/EDL operating firmware into the directory where PDLCONF/EDLCONF is located. Note that some browsers may not properly download the firmware file. We recommend that you download the zipped version to avoid this problem.
- Connect your PDL to your computer using the programming cable and run PDLCONF/EDLCONF.
- After loading the configuration, click on the icon in the upper left-hand corner of the screen, and select "Upgrade modem firmware."
- Specify the appropriate firmware revision in the dialog box and click OK. The firmware will be upgraded.