I have just updated my dual sim xperia and noticed, like previous updates that the dual sim version is updated as if a single sim. I tried to apply the necessary adjustments using the phone's terminal but this time I've made a mistake and the phone won't boot up beyond the initial searching for the sim screen. ( a revolving circle which goes blank after about 20 seconds), I can't get access to the phone using my computer's remote terminal , I don't know why because I have successfully done it in the past. Any ideas anyone please. I don't mind doing a total reset if necessary as I made a backup but don't know how. Many thanks