The RUU was not merely a file installer; it was a complex software suite consisting of three main components:
, including messages, contacts, and apps. Back up everything before starting. How to Use the Utility There are two primary ways to apply an RUU update: 1. Windows Executable (.exe) Method htc android phone rom update utility
file on your Windows PC and follow the on-screen installation wizard. Completion The RUU was not merely a file installer;
: You must use an RUU that matches your device’s Model ID (MID), Carrier ID (CID), and region. Installing an incompatible RUU will result in a "Model ID Error" or "Customer ID Error". Carrier ID (CID)