Ulefone has released its Ulefone Vienna for a while, but it is still attracted by numerous users. We need the better experience, so they release its ROM now. We can look back that Ulefone Vienna is powered by MTK MT6753 processor Octa core 1.3GHz, 64Bit, RAM 3GB ROM 32GB, it has 5.5inch 1080p LTPS Sharp screen and 13MP Back camera and 5MP front camera. It’s famous for HIFI sound effect and Sony 3250mAh battery to support 260 hours standby time.
Let’s check how to install the firmware.
WARNING! Installation process will remove all the data from you device. Please, if you have an important data on your device, backup your files
It is recommended to use Windows 7 operating system, as the driver temporarily does not support Windows 8 and newer version of the operating system.
The latest rom is in this package, therefore no need to download it from website.
Step 1: Driver Installation
1. Open Driver Auto Installer folder and Run Install.bat
2. Wait until program install the drivers.
You will see that screen if the drivers were installed successfully.
Step 2: Update(Flashing)
(PS: install the tool for the first time, system will note you that get a new hardware, pls from “Save the upgrade tool path” to find the file “Flashing Tool”)
1. Open “CheckSum_Gen.exe“, press Enter, and wait until the program proceed to 100%
2. Click “SPMultiPortFlashDownloadProject.exe” 
, open the tool(as picture 1);
Picture 1(opening interface)
3. Choose file:click “File”(as picture 2), click “Open Download Agent File”, choose “MTK_AllInOne_DA.bin” (as picture 3), Click “Open”.
Picture 2
Picture 3
4. Choose file:click “Scatter File”(as picture 4), Find “Date number_ulefone Power” Files, choose”MT67xx_Android_scatter.txt”.
Picture 4(load the software)
5.start upgrading: click “Start all” first, then connect phone with USB cable, start to upgrade.
Download here: Ulefone Vienna ROM