The RUU’s bootloader is older than what is currently installed, and you have S‑ON. Solution: You must first downgrade your hboot (requires S‑OFF) or look for a newer RUU.
Better memory management protocols inherent to the Android Ice Cream Sandwich kernel structure. Use Cases: When Do You Need This File?
Initially launched with Android 2.3 Gingerbread, this specific RUU represents the official transition to Android 4.0 Ice Cream Sandwich. This update introduced the Holo design language, native screenshot capabilities, and improved multitasking. Technical Prerequisites for Flashing
Ensure your HTC EVO 3D battery is charged to at least 50% to prevent unexpected power-downs during critical partition writes. Flashing Procedure Step-by-Step The RUU’s bootloader is older than what is
– If you only need to fix a boot loop or remove a custom ROM, you might also try flashing a stock ROM zip through a custom recovery (if available) – but the RUU is the most thorough method.
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
Running an official executable installer requires satisfying strict hardware and software conditions to prevent validation errors: Use Cases: When Do You Need This File
ROM Upgrade Utility. This is a Windows-based executable used to flash or restore a device to its factory software state.
Or run the executable, then copy rom.zip from %TEMP% before the wizard closes. The extracted rom.zip can be flashed via fastboot oem rebootRUU and fastboot flash zip rom.zip .
: The internal codename for the GSM variant of the HTC EVO 3D. : Signifies Ice Cream Sandwich (Android 4.0.3) and HTC Sense 3.6 hTC-Asia-TW Technical Prerequisites for Flashing Ensure your HTC EVO
The RUU installer will launch a graphical wizard:
The phone must have a battery charge of at least 30%. The official HTC USB drivers must be installed so the computer recognizes the device in bootloader mode.
If your device is bootloader-unlocked via HTCDev, you must manually re-lock the bootloader using fastboot commands ( fastboot oem lock ) before running a signed RUU, otherwise, the utility will throw an "Error 155: Relock Bootloader" message. Step-by-Step Installation Guide