i must tell you "thanks" for having me upgrading the hard spl and the radio rom...from now i can totally say that:
-i got a better cellphone communication(always got problem inside the house, now i got full signal)
-i briefly test the GPS with Google maps who used to take forever to find the birds so now in cold start +- 4min. and hot start(at least 60min after) +- 1min. Unfortunately, all my minisd card are unusable

so i can't test the gps with tom tom or igo but it's a matter of time...
When we talk about upgrade...that's what i mean...!!!
now i got the wind in my back and I'm thinking about "THE ROM" upgrade...any suggestions...?