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Parker Garcia
Parker Garcia

Sony Xperia Z5 Premium SO-03H (NTT Docomo) Stock Rom .ftf: How to Download and Flash with FlashTool


Official Sony Xperia Z5 Premium SO-03H (NTT Docomo) Stock Rom .ftf for FlashTool




If you own a Sony Xperia Z5 Premium SO-03H (NTT Docomo) smartphone, you might be wondering how to install the official stock ROM on your device. Maybe you want to restore your device to its original state, fix some issues, or enjoy the latest features and security updates. Whatever your reason, flashing a stock ROM .ftf file using FlashTool is a simple and effective way to achieve your goal.




Official Sony Xperia Z5 Premium SO-03H (NTT Docomo) Stock Rom .ftf for FlashTool



In this article, we will explain what a stock ROM is, what a .ftf file is, and how to use FlashTool. We will also show you how to download the official stock ROM .ftf file for Sony Xperia Z5 Premium SO-03H (NTT Docomo) and how to flash it to your device. By following this guide, you will be able to install the official stock ROM on your Sony Xperia Z5 Premium SO-03H (NTT Docomo) in no time.


What is a stock ROM and why you might need it




A stock ROM is the official firmware that comes pre-installed on your smartphone. It is developed by the manufacturer of your device and contains the operating system, drivers, apps, and settings that are optimized for your device. A stock ROM usually provides a stable and smooth performance, as well as regular updates and security patches.


However, sometimes you might want to flash a stock ROM on your device for various reasons. For example, you might want to:


  • Restore your device to its factory settings if it is malfunctioning or corrupted



  • Unroot your device or remove any custom modifications that you have made



  • Upgrade or downgrade your device's firmware version



  • Fix any bugs or issues that are present in your current firmware



  • Improve your device's battery life, speed, or performance



Flashing a stock ROM can help you solve these problems and give you a fresh start with your device.


What is a .ftf file and how to use FlashTool




A .ftf file is a flashable firmware file that contains all the necessary files and data to flash a stock ROM on your device. It is usually compressed in a zip format and can be extracted using any archive tool. A .ftf file can be created using various tools, such as XperiFirm or Flashtool.


FlashTool is a free software that allows you to flash .ftf files on Sony Xperia devices. It supports various features, such as backup, restore, root, unlock, and more. FlashTool is compatible with Windows, Linux, and Mac OS. You can download FlashTool from its official website or from the link below.


What is the Sony Xperia Z5 Premium SO-03H (NTT Docomo) and its specifications




The Sony Xperia Z5 Premium SO-03H (NTT Docomo) is a variant of the Sony Xperia Z5 Premium, which was released in 2015. It is a high-end smartphone that features a 5.5-inch 4K display, a Snapdragon 810 processor, 3 GB of RAM, 32 GB of internal storage, a 23 MP rear camera, a 5.1 MP front camera, a fingerprint scanner, and a 3430 mAh battery. It runs on Android 5.1.1 Lollipop out of the box and can be upgraded to Android 7.1.1 Nougat.


The Sony Xperia Z5 Premium SO-03H (NTT Docomo) is exclusive to the Japanese carrier NTT Docomo and has some differences from the global version of the Sony Xperia Z5 Premium. For example, it supports FeliCa (a contactless payment system), VoLTE (Voice over LTE), and WiMAX (a wireless broadband technology). It also has a different model number and firmware version.


How to download the official stock ROM .ftf file for Sony Xperia Z5 Premium SO-03H (NTT Docomo)




If you want to flash the official stock ROM on your Sony Xperia Z5 Premium SO-03H (NTT Docomo), you need to download the official stock ROM .ftf file first. There are several sources where you can find the official stock ROM .ftf file for your device, but not all of them are reliable or updated. Therefore, you need to be careful and verify the source before downloading the file.


One of the best sources to download the official stock ROM .ftf file for Sony Xperia Z5 Premium SO-03H (NTT Docomo) is XperiFirm, a tool that allows you to download the latest firmware for any Sony Xperia device directly from Sony's servers. XperiFirm is easy to use and ensures that you get the original and unmodified firmware for your device.


To download the official stock ROM .ftf file for Sony Xperia Z5 Premium SO-03H (NTT Docomo) using XperiFirm, follow these steps:


  • Download and install XperiFirm from its official website or from the link below.



  • Launch XperiFirm and select your device model from the list. In this case, select "Sony Xperia Z5 Premium (SO-03H)" under "Docomo".



  • Select the latest firmware version available for your device. In this case, select "32.4.B.1.54" under "Japan".



  • Click on "Download" and choose a folder where you want to save the firmware files.



  • Wait for the download to complete. You will see a message saying "Download finished successfully!" when it is done.



After downloading the firmware files using XperiFirm, you need to check their integrity and extract them to get the .ftf file. To do this, follow these steps:


  • Open the folder where you saved the firmware files and locate the file named "FWinfo.xml". This file contains information about the firmware, such as its model number, version number, region, size, and checksum.



  • Open the file with any text editor and look for the line that says "". This is the checksum of the firmware file that you need to verify.



  • Copy the checksum value and paste it into any online checksum calculator. Then, browse and select the file named "FILE.zip" in the same folder. This is the firmware file that contains all the data and files needed to flash your device.



  • Click on "Calculate" and compare the result with the checksum value that you copied earlier. If they match, it means that your firmware file is intact and not corrupted. If they don't match, it means that your firmware file is damaged or modified and you need to download it again.



  • If your firmware file is verified, you can proceed to extract it using any archive tool. You will get a folder named "FILE" that contains several files with different extensions.



Rename the folder to "Sony Xperia Z5 Premium SO-03H (NTT Docomo)" or any name that you prefer try to unbrick it using FlashTool. FlashTool has a feature called "Flashmode" that allows you to flash a stock ROM .ftf file even if your device is bricked. To unbrick your device using FlashTool, follow these steps:


  • Download the official stock ROM .ftf file for your device model and region using XperiFirm as explained above.



  • Check the integrity and extract the firmware file to get the .ftf file as explained above.



  • Launch FlashTool on your computer and wait for it to load.



  • Click on the lightning bolt icon on the top left corner and select "Flashmode".



  • A new window will pop up showing a list of available firmwares. Select the official stock ROM .ftf file for your device that you created earlier and click on "Flash".



  • A new window will pop up asking you to select some options. You can leave them as default or customize them as you wish. Then, click on "OK".



  • A new window will pop up instructing you to connect your device to your computer in flash mode. To do this, hold the volume down button and plug in the USB cable.



  • Wait for FlashTool to detect your device and start flashing the stock ROM .ftf file. You will see a progress bar and some messages on the screen.



  • Do not disconnect your device or interrupt the flashing process until it is finished. You will see a message saying "Flashing finished" when it is done.



  • Disconnect your device from your computer and turn it on. It might take some time for the first boot, so be patient.



  • You have successfully unbricked your device using FlashTool. You can check the firmware version and other information by going to Settings > About phone.



I hope this article has helped you to download and flash the official stock ROM .ftf file for Sony Xperia Z5 Premium SO-03H (NTT Docomo) using XperiFirm and FlashTool. If you have any questions or feedback, please leave a comment below. Thank you for reading! dcd2dc6462


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