Quote Originally Posted by Jan Knegt
Oleg, I've download the firmware (I've bought the wl 500g two days ago and I've tried to connect my HP 710C printer (parralel). But it still doesn't work. I've understood that with the new firmware this problem should be solved. But my system (XP-SP2) doesn't recognize the TRX extension. Which program do i need to instaal the new firmware?
your question is ANSWERED ABOVE already!!

and it is in the manual

http://wl500g.info/showpost.php?p=9430&postcount=57