Restores the device to its official factory state to comply with warranty requirements. Types of HTC RUU Files
Connect your phone directly to a motherboard USB port (preferably USB 2.0) rather than a USB hub.
Insert the SD card, boot to Bootloader, and the phone should automatically detect the file and ask if you want to flash it 1.2.3. Troubleshooting the RUU Process
One of the most common uses for an RUU is to "unbrick" a phone that has become stuck in a boot loop or is otherwise malfunctioning. By re-flashing the complete factory image, you can often bring a device back from the brink. htc android phone rom update utility
If you own an HTC Android device and want to restore, update, or unbrick it, you will inevitably come across the term .
: Run the downloaded RUU file on your PC and follow the on-screen wizard instructions. Completion
The update process may take several minutes. Your device may restart during the process. Do not disconnect your device from the computer until the process is complete. Restores the device to its official factory state
The HTC ROM Update Utility remains a foundational asset for managing the software health of any HTC Android smartphone. By matching your device's exact region codes, backing up your personal data, and following the structured flashing steps, you can reliably restore your phone back to optimal factory performance. If you are currently trying to fix your device, tell me: What is the exact you are updating? What error code or issue are you experiencing right now?
Once your preparations are complete, you can proceed with the installation:
Even with careful preparation, errors happen. Here are the most frequent issues: Troubleshooting the RUU Process One of the most
While OTA updates remain the standard for most users, the RUU continues to play a vital role in the HTC enthusiast community. It remains the most reliable method for:
Rename the downloaded RUU zip file to match the specific structural filename required by your phone model (e.g., 0PJAIMG.zip for the HTC One M9, or 2PS6IMG.zip for the HTC 10).
: Because the RUU deletes all personal data (apps, messages, settings), a manual backup is required beforehand. Australian Broadcasting Corporation Common Installation Methods Process Summary Windows EXE Connect the phone to a PC via USB, run the file, and follow the on-screen installation wizard. SD Card (ZIP) Rename the RUU ZIP file (e.g., to 2PS6IMG.zip
| Error Code | Message | Solution | |------------|---------|----------| | | USB Connection Error | Reinstall HTC drivers. Try a different USB port (USB 2.0 preferred). Use a shorter cable. | | Error 155 | ROM Version Mismatch | Your bootloader is unlocked or you have a custom ROM. Relock the bootloader: fastboot oem lock . | | Error 140 | Bootloader Version Error | The RUU is older than your current bootloader. You cannot downgrade without S-OFF. | | Error 132 | Signature Error | The RUU is not intended for your device (wrong MID/CID). Double-check your model. | | Error 171 | USB Connection Lost | The USB cable was disconnected during flash. Try a different PC or disable USB selective suspend in Windows Power Options. | | Stuck at 0% / 1% | — | Your phone has S-ON (security on) and the RUU isn’t signed for your CID. You need S-OFF or an RUU with matching CID. |
The utility will automatically scan for your connected device. If your phone is booted into Android, the utility will automatically reboot it into .