OK, I flashed the 2.4.3 version with recovery mode. All OK. The heli is good but again not recognize on my PC and MAC...
Perhaps the cable, I can try again an other ...No blue light on the cable when it is on the heli (but not on PC).
It's the 2 em cable I try, I have other (I have 6 spirit) but it's very strange..
edit
OK I tried with an other cable, the same. I tried with an other heli (oxy3), the same. I tried on both my mac or PC (windows 7), the same .
Perhaps a driver problem on my PC or Mac...I don't know..
edit
OK I think it's my fault.
before
put battery on heli and connect the link on heli and mac and switch the soft on mac: nothing
after
put the link in first on heli and mac, put the battery on heli and switch the soft on mac : ok recognize
strange because before I think the first metod was ok.