Hmm,
That wiki guy must of woke up and cleaned up the confusing sentence at the bottom of the LE EX/RX manual
Lynx Express Board Mods Needed for Wireless to work
* LE ver 2.0 you have to remove the RS-485 chip
* LE ver 3.0 you have to remove the RS-485 chip on the right side of the DMX IN RJ485 connector
* LE ver 4.0 and later set the jumper below the RS-485 chip to wireless mode
Cheers
Rick R.