Analog
I don't , it's useless. the system recognise the TH2g with or without GMX
xt1900
I never did an update I don't know what firmware version
Booth , I own a 2007 where I use two TH2g Analog, and I'm right now on a show with a 2008 using two digital TH2g and I get 6 800x600
Let's say there is no config you just select the res you need and if the TH2g it's hooked at startup the Os will give you back the same resolution at every start up
all the 10.4.x and all the 10.5.x worked fine on many different machines all with xt1900