Hey everyone
I've just went down this alley: downgrading to 1.2.9, loosing all my devices from the ax pro interface, reconnecting them (as if it's a new system) etc
My conlusion: I DO NOT recomment 1.2.9. The thing is that Hik is more or less improoving it's functionality with software updates. For example, when I've downgraded from 1.3.0 to 1.2.9, my sytem started to act wierd: when I activate the alarm on the keypad, and stay in the hall after that for a couple of seconds it triggers the alarm (triggered by PIR installed in the hall). So when I needed to set the alarm, I had to quickly leave right after that, otherwise I had to come back and disarm and arm again.
That doesn't happen when I use 1.3.0. I've had to explain this situation to my wife and kids, and it really drove me nuts.
So I've upograded to 1.3.0 and now everything works right. No devices were lost during upgrade.
The only thing that bothers be now is a warning sign on the panel and keypad )