Best posts made by turtlenate

Hi, I have a Sony Xperia X, F5121, UB Touch updated successfully to version 1103 on 22 April but since then it has downloaded updates but doesn’t install them after rebooting. It goes to the Android recovery screen. When I select Reboot on the screen it reboots fine without updating. Update Version 1114 is downloaded but won’t install. Thanks in advance for any help