I have the firmware that reader Eriks got from PlayBase and sent to me all packaged up with the flashing tool and drivers ready for download.
It's big- 125MB- and a .zip file. The firmware is already set up in the ./image directory. Check the !Readme1st.txt file for instructions.
Download here from 4shared.com and drop me a note to let me know how it went.
Thanks again to Eriks.