Programming software for the following EF Johnson (EFJ) models :
5100 Portable
53xx Mobile
7780 Portable
9883 Mobile

This version is confirmed working with EFJ 5100 v1.12.2.  Note that 5100 series v4.0 or higher REQUIRES PCC 2.x.x so don't use this.

Change log:  http://www.efjohnsontechnologies.com/resources/dyn/files/76091/_fn/2004.06.28_5100Portable%25265300Mobile_FSN-0604-ACC-10.pdf