Ruu-shooter-u-ics-35-s-htc-asia-tw-3.28.709.3-radio-11.77.3504.00u-11.25.3504.06-m-release-270747-signed.exe ((link)) Now

Ensure the phone is in Fastboot mode and drivers are correctly installed. Try a different USB port.

Right-click the .exe file on your Windows PC and select "Run as Administrator" .

Install the latest HTC USB Drivers or HTC Sync so your PC can recognize the phone in Fastboot mode. Ensure the phone is in Fastboot mode and

The utility will verify your current software version and device ID (CID). If compatible, click "Update" and wait for the progress bar to finish. Do not disconnect the cable during this process. Common Troubleshooting

Connect your phone to your PC via a high-quality USB cable. Install the latest HTC USB Drivers or HTC

Before running this RUU, ensure the following conditions are met to avoid permanent damage to your device:

Manually installing a system update when the Over-the-Air (OTA) method fails. Installation Prerequisites Do not disconnect the cable during this process

Running an RUU will completely wipe all data on your phone, including apps, texts, and internal storage. Flashing Procedure

An RUU (ROM Upgrade Utility) is a Windows-based executable used to flash official firmware to HTC devices. It is a critical tool for: