An installation wizard will open. Read and accept the on-screen warnings regarding data loss.
If the update fails, the RUU is designed to provide error codes and recovery measures. HTC Support | Updates htc android phone rom update utility
Flashing a specific RUU will force your device onto the designated Android version contained within that utility. Risks and Prerequisites Before You Begin An installation wizard will open
Here are some popular ROM update utilities for HTC Android phones: HTC Support | Updates Flashing a specific RUU
Once completed, the utility will display a success message, and your phone will reboot automatically into the setup wizard. Alternative Method: Flashing RUU via SD Card (Zip Method)
Though HTC's presence in the smartphone market has diminished, the RUU utility endures as a powerful testament to an era when phone manufacturers gave users direct access to deep system tools. For those who still own and cherish HTC Android phones, mastering the RUU is an essential skill that can extend the life and functionality of these devices for years to come.
: Frequently used as a "last resort" to fix devices stuck in boot loops or failed custom ROM installations.