I revirginised my phone that had been unlocked with iUnlock, upgraded to 1.1.1 and unlocked with Anysim as per the guide. however upon rebooting i get a 'SIM Failure message' pop up. i click ok, then 10 seconds later it detects the network and all is well, calling out and txt'ing seems fine so far. any ideas ? does this bode badly for the future ?