Users typically sought out this specific file for several critical maintenance tasks:
: Manually upgrading the device from Gingerbread (Android 2.3) to Ice Cream Sandwich. S-ON/S-OFF
The filename is a structured string used by HTC to identify the device, region, and software version. Technical Breakdown Users typically sought out this specific file for
: Flashing an RUU completely wipes the device, returning it to its original "out-of-the-box" state.
Unlike modern smartphones that handle updates seamlessly over the air (OTA) in the background, the Android ecosystem of the early 2010s often required users to connect their devices to a PC via USB to run an executable. This executable would verify the device, wipe the old system partition, and flash the new operating system image. This firmware brought the updated HTC Sense 3
The HTC EVO 3D was notable for its and autostereoscopic 3D display , which allowed users to view 3D content without glasses. This firmware brought the updated HTC Sense 3.6 interface to the device, improving multitasking and overall system performance. How It Is Used
This is the "Stock ROM" for the Taiwan market. Asian variants of HTC devices were often prized by developers because they tended to be "Cleaner" (less bloatware) compared to US carrier-branded versions, and they often received updates faster. The "709" identifier found later in the filename corroborates this, as CID (Carrier ID) numbers starting with 70x were typically assigned to the Asian/Taiwanese region (e.g., HTC__038). and they often received updates faster.
: Manually boot the phone into fastboot mode (Volume down + Power) while the RUU is waiting. It will detect and continue.
Upon completion, the phone will reboot to a clean, stock Android 4.0.3 with HTC Sense 3.6. First boot takes up to 5 minutes.
: Build number (270747) indicating the specific compilation. "Signed" means it uses HTC’s official cryptographic key—essential for bypassing signature checks on an S-ON device.