Also Tomas usally sends these files by PM and not list on the forum, so check your emails and junk folders....

Yes I know, I have been checking every day. I will contine to email them.

I contacted them by facebook and received a reply with the instructions today.
I will fly tomorrow, seems it needed some calibration

Update: I re calibrated all my spirit units, I got much better results now, specially when higher stabilization rates are used. Example: Stabi acro mode =1, coaxial mode =3. Stabilization seems stable.
However, I have a question: is stabi modes really intended to fly with stabi ON all times during flight?
I ask this, because compared to other products (Axon, Microbeast) the Spirit units seems to take much more time to stabilize and self level, even with higher rates.
Example: after doing 8 consecutive backward flips, and releasing the sticks, the helicopter will tend to drift sideways, and after 2-3 seconds will really self stabilize.
just trying to understand the feature in more detail.

I think that if you intend to use it all the time you should use the Coaxial option. But I'm not sure.

That´s why I am asking.
Other products with similar capabilities such as AXON and Microbeast do self-stabiization during whole flight and they do it pretty fast without drifting when finishing a maneuver?
is the Spirit intended to be use it like this? or is it normal that it drifts, then after 2-3 seconds self stabilizes

It's in the manual:

Upon activation of the Coaxial, the model will attain horizontal level quickly (Skids down or up depending on what is closer).

Upon activation of the Stabilisation (Normal), the model will attain horizontal level rather slowly (Always skids down).