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The Ultimate Guide to the HTC Android Phone ROM Update Utility (RUU)

This article provides a comprehensive guide on what the RUU is, how it works, and how to use it to update or restore your HTC Android phone. What is the HTC ROM Update Utility (RUU)? htc android phone rom update utility

: Often occurs if the bootloader is unlocked when it needs to be locked, or if the RUU version is older than what is currently on the phone (downgrading is restricted unless you have S-OFF). The Ultimate Guide to the HTC Android Phone

For most standard RUUs to run, the device's bootloader must be in a "Locked" or "Relocked" state (unless the device has "S-OFF" status). Battery Life: For most standard RUUs to run, the device's

Use the volume keys to navigate to and press the Power button to select it. Connect the phone to your PC.

Before running any RUU, you must perform the following checks:

If you downloaded a .zip format RUU, you can flash it without the desktop wizard: