nofuturenocore wrote:...While using Sub Phatty with Ableton Live Suite 9 I got some problem with the LFO.
Sometimes it just stop works and then it works again...
A part this I didn't understand something about the local mode...is an other usefulness about this mode ?
...Where can I find more information about all theses things that are not in the User's manual.
Hi NoFuture... you did OK with the English.

better than I could do in any other language without some help.
so -- you should try setting Local Control to Off. For the way in which you are using the Sub Phatty, it could help.
The best place to learn information that isn't in the manual is probably by searching my forum posts.

For example, I explained the purpose of Local Control in this very thread:
[Local Off is] a way to resolve the conflict that would otherwise occur when the Midi Track is Armed and you're turning a panel knob... you want the knob to send MIDI so you can record the automation... you want the track to send MIDI to the synth because that's it's entire reason for being... given that both those things are happening, you DON'T want the knob to affect the sound engine directly, because that would duplicate what the MIDI is already doing.
So, in the situation where you have an External Instrument track, and "MIDI From" is set to Sub Phatty (or All Ins), and "MIDI To" is set to Sub Phatty, and Monitor is set to In or Auto... then you should probably set Local Control to Off. Otherwise, a lot of the time you will be sending duplicate messages to the Sub Phatty any time you turn a knob or play keys. This can cause glitchy sounds, and possibly other strange behaviors.
EDIT: about the firmware update -- I would never do a firmware update through a USB hub; the best practice is to connect the computer directly to the device for firmware update. Use a good USB cable, too.

It's best to minimize any possible chance of failure, and a hub is a potential point of failure. So, no need to use it.