I just updated my Desire HD today to the latest Android 2.3.5 and Sense 3.0, but now I have no mobile network signal. Wifi works but I have no 3G signal at all. I have taken out the sim card and the battery and restarted but that hasnt worked. My phone currently tells me its 0:17 on 06/01/1980 as it wont update from my network carrier because of no 3G signal. Can anyone help me with this?