root the phone and delete the update app from /system, I've always done this way
this way you will loose also some sony apps updates maybe, but you can still get them here in the forum (even more updated from other phones maybe)
Some older devices still remain very popular. Phones like theHTC Desire, Sony Ericsson … more
23 Sep 2014
By Tomek Kondrat
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?