Follow the on-screen prompts in the wizard.
3.28.709.3 (Region code .709 specifically denotes Taiwan). Radio (Baseband) Version: 11.77.3504.00U_11.25.3504.06_M . Key Components of the Filename
This process wipes all user data , including apps, messages, and settings. How to Install via Windows PC Follow the on-screen prompts in the wizard
– Flashing the RUU updates the radio firmware, which can improve signal strength, Wi‑Fi stability, and Bluetooth performance.
If you are currently working on restoring or modifying an HTC device, please let me know , what error messages you are encountering, or if you need help extracting the rom.zip file manually. Share public link Key Components of the Filename This process wipes
The device Carrier ID (CID) and Model ID (MID) must match the regional profile of the software. For this Taiwanese build, the device must possess an HTC Asia-TW CID (such as HTC__621 ) unless the handset has been modified to an "S-OFF" state, which bypasses regional cross-flashing checks. Step-by-Step Installation Guide
Integration of HTC Sense 3.6, which offered a smoother experience than previous versions while retaining the classic HTC widgets. Share public link The device Carrier ID (CID)
The software localization channel. This tells us the ROM is built with localized language packs, APN settings, and regulatory configurations specifically for . 3.28.709.3
Users looking to trade in, sell, or preserve the device in its original state can use this file to lock the bootloader and remove custom recoveries like CWM or TWRP. It restores the stock recovery image, stock kernel, and system binaries. Step-by-Step Installation Guide
The RUU execution will wipe all data on the phone's internal storage, including text messages, applications, and settings.
Legacy HTC flashing scripts often fail when plugged into modern USB 3.0/3.1 ports (blue slots). Use an older USB 2.0 port and an original, stable micro-USB cable.