Download Huawei Mate S Stock Marshmallow B321 Firmware [Europe]

Guide: How to Download & Install Huawei Mate S Stock Marshmallow B321 Firmware CRR-L09 [Europe].Upgrade your Huawei Mat S CRR-L09 to Android 6.0 with latest EMUI 4.0

Huawei has released a new Marshmallow update for Huawei Mate S In Europe region.The Update comes with Huawei’s Emotion UI v4.0 (EMUI 4.0), it is not the latest but still a welcome update.Previously Huawei Mate 8 has received EMUI 4.1 update.Now here we are going to share step by step guide on How to Download & Flash / Install Official Huawei Mate S Stock Marshmallow B321 Firmware [Europe] (EMUI 4.0)

Huawei Mate S was released last year and was the Flagship device of the company.It comes with a large 5.5 inches FHD display with a resolution of with 1080 x 1920 pixels.It is powered by a 1.7GHz octa-core HiSilicon Kirin 935 processor coupled with 3GB of RAM.It has 32GB of internal storage with microSD card slot.You can add microSD card up to 256GB.It sports a 13MP primary camera on the rear and an 8MP front camera for selfies.Overall it’s a great device.Now Official Marshmallow 6.0 Update is also available for the device.The OTA update is 1.42GB in size and comes with a build number CRR-L09C432B321.

As I mentioned before, this is an official Android 6.0 Marshmallow update and it is very stable enough to be used as daily driver.The update will be rolling via OTA, you can manually check for the update.Please follow the given steps to check for the update yourself.This is only for Europe region so if you have a europian model then you are going to get this update

[symple_box color=”gray” fade_in=”false” float=”center” text_align=”left” width=””]To Check for latest Update, Go to Settings >> About Phone >> Software Updates [/symple_box]


If you own the device then you will receive a notification  about the update, but the device should have a locked bootloader if the bootloader is unlocked or device is rooted then you are not going to get any notification.You can update via OTA (Over-the-air).But if the update is not available in your region then you can wait for the update to come or you can Update Huawei Mates S to Marshmallow (EMUI 4.0) Manually.Just follow the given steps to safely Flash / Install Huawei Mate S Stock Marshmallow B321 Firmware

The Android Marshmallow 6.0 (EMUI 4.1) Official Update comes with loads of extra features.You will also get the DOZE Mode with great battery optimization.This update comes with loads of bug fixes and security patches.The B120 Marshmallow Firmware update also comes with latest EMUI 4.0


  • Make sure there is at least 70% battery left on your smartphone before beginning the process.
  • This firmware update is only for Huawei Mate S (CRR-L09) (Europe)

WARNING: will not be held responsible for any kind of damage occurred to your Huawei Mate S while following this tutorial.Do it at your own risk.


Download B321 Marshmallow Firmware for Huawei Mate S

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Step By Step Guide

 Huawei Mate S Stock Marshmallow B321 Firmware

If you have any questions related to this post feel free to ask in the comment section. 🙂

An NIT Rourkela Graduate in CS, Blogger, Android Geek, and a Tennis Fanatic. I have been writing about Android OS for Last 8 years.

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