I have a freind with the same problem.
I try to :
Update the ROM's, try several
Update the Radio Rom, try 1.09 and 1.18
Hard Reset several times
Soft reset several Times
Use alternative software, to turn on the WIFI.
And always no sucess.
What I have read is that in Athena PDA, some times during the process of Unlocking or upgrade, the device can loose the MAC ADDRES. I think is because of CID lock....
They develop an utility to set a new mac address , but I don't think it works on Universal.
I try to find a way to see the mac adresss of WLAN Card, but all the tools (ex: vxipconfig) can only see the mac addres if the wifi is turned on .
Also read something about the possibility to create a script vjvolubilis to turn on the wifi and run it before conmanager... Din't try....