Here’s a professional write-up for the RUU file you’ve specified. This is typical for a developer, technician, or archivist documenting an HTC RUU (ROM Update Utility).
Asia-TW region (709). Attempting to flash this on a European or US carrier-locked device will typically fail unless the device is "SuperCID'd."Bootloader Status: For RUUs to install successfully on many HTC devices, the bootloader usually needs to be locked or relocked if it was previously unlocked via HTCDev. Here’s a professional write-up for the RUU file
Important warnings:
The naming convention provides specific information about the software version and target hardware: Device Code (SHOOTER-U): CID Lock: The flashing process checks the device's
: The Regional ID (CID) for Taiwan. RUUs are region-locked; you could not easily flash this on a European or US Sprint device without "SuperCID" status. 3.28.709.3 : The specific software version number. Bootloader Status: For RUUs to install successfully on
Error 155 (Unknown Error): This often indicates the bootloader is unlocked. Use the command fastboot oem lock in the ADB terminal to relock it before trying again.