I own this mob for few months. I bought it only for SKYPEing, but now I have more wishes. Everythig works OK, but GSM. I read about flashing ROMs from WM5 to WM6, and about risks to brick RADIOrom. And I try pach with SDcard (WinHex), but story is the same. On my phone is no mesage NO GSM on start, and nobody describe how it works when RADIOrom is broken. My phone having signal when I put SIM in, but every 20sec it goes down and sign-! is behind antena sign. It is for about 10sec, and there it is again online. This is repeat almoust in the same interval. So I can make or receive call and sound is perfect for that 20sec and then it break the signal. If somebody know reason why, please ansver.