Download and Install Asus Zenfone 3s Max Stock Firmware/ROM

Full Collection of Asus Zenfone 3s Max Stock Firmware/ROM: The Zenfone 3S Max is released in 2017, in the big battery smartphones. Zenfone 3S Max claim to fame is the 5000mAh massive battery, packed in the box with a surprisingly compact design. we have seen many big battery smartphones in the last couple of years, most of them end up being bulky and too large, but it is not in the case of Asus Zenfone 3s Max. Asus Zenfone 3s Max comes with Android 7.0 Nougat with the 5.2-inch display, 3GB of RAM powered by MediaTek MT6750 Octa-core 1.5 GHz Cortex-A53 processor out of the box. As the device is released in 2017, it may receive Android 8.0 Oreo update.

Android is one of the top operating systems for smartphones, smartwatches, smart TVs and for so many other devices. There is no doubt about the operating system’s performance and capabilities. Hence more and more people buying an Android device rather than an Apple device. However, while purchasing a new smartphone we often get to interact with the word stock ROM. Just in case if you are too wondering what actually stock ROM stands for. Well, then we are here to help you out. Read on and this article will walk you through about stock ROM and its benefits.

What Is Stock ROM and What are its benefits?

Stock ROM’s are the ones that come pre-installed on phones or tablets. These are the versions of Android developed by the OEM’s for making their phones look unique. They also come with pre-installed with certain apps.

The reason for the usage of Custom ROM’s over Stock ROM’s are:

1) Security: These ROM’s are developed by big companies and hence there are fewer chances of malware/ virus affecting the phone.

2) Warranty: Installing a Custom ROM needs root access and this voids warranty of your smartphone in most cases. A lot of OEM’s do not allow the root access or customization.

3) Pre-installed apps and features: A lot of these ROM’s come with pre-installed apps which are sometimes useful. These apps vary between different manufacturers and even for models. Some OEM’s also give their customers premium features like Launchers, wallpapers, home screen, etc.

The Advantages Of Asus Zenfone 3s Max Stock Firmware

  • Flash Stock To Unbrick your Asus Zenfone 3s Max.
  • Flash Stock ROM to Fix the bootloop problem.
  • Upgrade and Downgrade Asus Zenfone 3s Max.
  • Unroot or Fix Bugs on your phone.
  • To fix the lag or stutter on Asus Zenfone 3s Max.
  • Revert back to stock to gain your warranty.

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Disclaimer is not responsible for any damage happened to your device(s) while following this guide, Proceed at your own risk.


This Update is only on Asus Zenfone 3s Max device.

[Full Collection] Asus ZenFone 3s Max Stock Firmware


Model Asus Zenfone 3s Max ZC521TL Version Update File Name and Link
Asus ZenFone 3s Max (ZC521TL) CMCC_CN-14.00.1705.22 2017/06/28
Asus ZenFone 3s Max (ZC521TL) CTCC_CN-14.00.1704.10 2017/06/1
Asus ZenFone 3s Max (ZC521TL) WW-14.02.1704.20 2017/05/19
Asus ZenFone 3s Max (ZC521TL) WW-14.02.1704.17 2017/04/27
Asus ZenFone 3s Max (ZC521TL) CTCC_CN-14.00.1704.8 2017/04/20 UL-ASUS_X00G_1-CN-14.01.1704.8(ZC521TL_CTCC)
Asus ZenFone 3s Max (ZC521TL) CMCC_CN-14.00.1703.19 2017/04/12
Asus ZenFone 3s Max (ZC521TL) CMCC_CN-14.00.1703.16 2017/03/09


Steps To Install Asus ZenFone 3s Max Stock Firmware/ROM

  1. Download Stock Firmware for Asus ZenFone 3s Max
  2. Download and install latest SP Flash tool on your PC.
  3. Now Follow our in-depth guides on how to install Stock ROM on Asus ZenFone 3s Max

How to Flash MediaTek Stock ROMs With SP Flash Tool

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I am a Tech Content writer and full-time blogger. Started my career as Engineer in Larsen and Toubro LTD. with 3 years of experience in Hyderabad Metro Rail Project. I have been doing blogging since 2015, started with zero experience and now I am the well-recognized blogger. I like learning new things and believe that there can never be an end to learning. You can shoot an e-mail at [email protected]

1 thought on “Download and Install Asus Zenfone 3s Max Stock Firmware/ROM”

  1. Any idea what is an ANDROID PIN

    I am not asking about Phone PIN

    I recently got the TouchPad and Display changed

    But cant switch on the phone now as it is asking for ANDROID PIN


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