Connect your HTC EVO 3D to your PC via a USB 2.0 port (avoid USB 3.0 ports as they can cause connectivity issues with older RUUs).
Assuming you have a Taiwan HTC One X (CID HTC__621) and are currently on a compatible hboot. Connect your HTC EVO 3D to your PC via a USB 2
This firmware is designed for unbranded or retail devices in and the broader Asian market. Software Version (3.28.709.3): : The major/minor base software version. : The region code specifically for Radio Version (11.77.3504.00U-11.25.3504.06-M): Software Version (3
The specific file you're referencing is a for the HTC EVO 3D (GSM) variant, specifically for the Asia-Taiwan (TW) region. This executable is designed to restore or update your device to a stock state using the official Ice Cream Sandwich (ICS) firmware. Firmware Identification Device Codename: SHOOTER-U (GSM version of the EVO 3D) Connect your HTC EVO 3D to your PC via a USB 2
Removing custom ROMs or modifications to return to the original stock experience.
RUUs typically require a locked or relocked bootloader if the device is S-ON.