The smartphone features a 6.78-inch LTPO AMOLED display with a 144Hz refresh rate, HDR10 support, and 1600 nits (HBM) / 2500 nits (peak) brightness. It is protected by Corning Gorilla Glass Victus 2 and has an always-on display. The phone is built with a glass front, aluminum frame, and glass back and is IP68-rated for water and dust resistance.
Powered by the Qualcomm Snapdragon 8 Elite (3nm) chipset, it features an octa-core CPU (2×4.32 GHz & 6×3.53 GHz) and Adreno 830 GPU. Asus Zenfone 12 Ultra runs Android 15 with two major updates. The storage options include 256GB with 12GB RAM and 512GB with 16GB RAM (UFS 4.0), with no microSD card slot.
The triple rear camera setup consists of a 50MP (wide) sensor with gimbal OIS, 32MP (telephoto) with 3x optical zoom, and a 13MP (ultrawide) lens. It supports 8K, 4K, and slow-motion video recording. The 32MP front camera features HDR and panorama.
The 5500mAh battery supports 65W wired (100% in 39 min), 15W wireless, and 10W reverse wired charging. Connectivity includes Wi-Fi 7, Bluetooth 5.4, NFC, and USB-C. It has stereo speakers, a 3.5mm jack, and Hi-Res audio support. Available in Ebony Black, Sakura White, and Sage Green.
Prerequisites & Preparation
- Backup Data: Flashing will completely wipe all data on your device. Back up important files and settings before proceeding.
- Battery Level: Ensure your device has at least 50% battery to prevent shutdown during the flashing process.
- USB Driver & Tools: Install the correct USB drivers for your brand and prepare the flashing tool (Odin for Samsung, SP Flash Tool/QPST for Qualcomm/MTK, etc.).
CAUTION: Flashing official firmware carries a risk of bricking your device. Proceed with caution and at your own risk. addROM is not responsible for any damage caused to your device.
Download Stock ROM & Firmware
Global / General
| File Type | Firmware / Build | Region / Model | OS Version | Download Link |
|---|---|---|---|---|
| Stock ROM | Zenfone-12-Ultra-AI2501-ZWW-35.1810.1810.326-1.1.1-2503.zip | Global / General | – | Google Drive |
How to Flash Asus Raw ROM via Fastboot Mode
To flash the stock raw ROM on your Asus Zenfone or ROG Phone device, follow the fastboot flashing steps below:
- Download and install the Asus USB Drivers on your computer.
- Download and extract the Asus Stock Raw ROM package on your PC.
- Power off your Asus device completely.
- Press and hold the Volume Up and Power buttons simultaneously until the device enters Fastboot Mode / Bootloader Mode.
- Connect your device to the computer using a high-quality USB cable.
- Navigate to the extracted firmware folder on your PC:
- On Windows: Double-click the
flash_all.batfile (orflash_all_wipe.batif you want to perform a clean flash and wipe all user data). - On Linux/macOS: Open terminal in that directory and run
sh flash_all.sh. - The command prompt/terminal window will open and begin flashing the raw firmware files automatically. Keep the USB connection stable.
- Once the flashing process completes, the device will reboot automatically into the system.
