It is possible. It could be that the sensors are not recognising when you have closed the device correctly and the screen may be on the whole time, for example. Try to re-pair the smart cover with your phone and see if it helps.
A factory reset will wipe out your data, but a software repair using Xperia Companion will completely re-install the firmware, so ideally it is best to do that.
If Xperia companion is not working correctly there are a few steps that you can try to resolve this.
Try these methods one after the other. Verify after each method whether the problem was solved, before trying the next one.
Try different USB cables and a different USB port in your computer.
Make sure that you have a working Internet access. Visit any website, for example, www.sonymobile.com, to verify that the computer can access the Internet. If that is a problem, please check cable, router or the Internet service provider etc.
Check your firewall and make sure that Sony Ericsson Update Engine and Xperia Companion are allowed to access the Internet. For instructions, refer to the user guide for the firewall.
Check your proxy settings. If you are trying to update your device when connected to a corporate network, you might be using a proxy. Contact your network administrator for further assistance.
