I have 1.0 (I bought 2 of these and were one of the first ones out they shipped the manual to cert dealers later cause it didn't exist and software was in the box) out there still running with double power supplies that did not require A registration and has 9 KX-7436's a 7636 2 cell Stations 4 slts 4 doorphones .The other one I bought also has no rom id is in my house and it has a 12 7600's on it I don't see were you get that it only supported 8x8 that is just not the case....