I bought my PRS-T1 yesterday from Target and could not get the reader to appear in the Reader Library software. The issue was the software- I had an older PRS-300 which used the "Reader Library" software. The PRS-T1 uses the new "Reader for PC" software available here.
http://esupport.sony.com/US/perl/mod...OC=3#/howtoTab
I installed the new software and it recognized the reader just fine. From there is authorized ADE on the reader.
Working like a charm!