Alesis Andromeda A6

Considering the purchase of said synth.  A few questions:

1. What's the most recent OS?

2. Is it possible to put the envelopes on HOLD like the ION does, 
thus acting as a damper pedal, allowing the sound to drone?

3.  Does the audio input allow for incoming sound to "stream" 
rather than being triggered by the keyboard or arpeggiator?
In other words, is there an open gate or audio pass-thru 
function?

4.  Is it possible for the LFO's to modulate each other?

Thanks