After the update (from 0.6K to 0.6M) when i connnect my insim, lfs or insim sening me me "InSim : version 0 requested - using 6" Is something bad ?
You haven't specified the Insim version in your application. It will still work, but without the new things added in Insim version 7.
Your program need to report an Insim version number, so that the Insim protocol knows what version has to be used. If nothing is reported (like it is now in your program) it will fall back to Insim protocol version 6.