Download Huawei GR5 2017 B378 Nougat Firmware BLL-L21 [April 2018 Security]

Huawei started rolling a new nougat firmware update for Huawei GR5 2017 with the BLL-L21 variant in Russia region. The update bumps the software version to BLL-L21C10B378. Follow our guide to install Huawei GR5 2017 B378 Nougat Firmware on the BLL-L21 variant. This update is all about the integration of the Google security patches released in April 2018 for improved system security. Along with this update, you will find regular bug fixes and improvement to the OS.

Huawei GR5 2017 features a 5.5-inches display with a screen resolution of 1080 x 1920 pixels. The smartphone is powered by Octa-core (2.1 GHz, Quad core, Cortex A53 + 1.7 GHz, Quad core, Cortex A53) and HiSilicon Kirin 655 coupled with 3GB or 4GB of RAM. The phone packs 32GB or 64GB internal memory which can also be expanded up to 256GB via microSD card. The camera on the Huawei GR5 2017 comes with Dual 12MP + 2MP rear Camera with Digital Zoom, Auto Flash, Face detection and Touch to focus and 8MP front shooting camera.Download Huawei GR5 2017 B378 Nougat Firmware BLL-L21 [April 2018 Security]

The update is rolling over the air and will reach every user running Stock firmware without root or mods installed.  According to Huawei, then the update may take a couple of days or even weeks to receive as it is sent in a phase-wise manner. By installing this, you will enjoy the April 2018 Security Patch on Huawei GR5 2017.

Manually Check Huawei GR5 2017 B378 Nougat Firmware BLL-L21

Now you can check for the OTA manually on Huawei GR5 2017 in case if you didn’t receive the OTA. You can follow the below-given instruction on your phone to check for the official OTA update on your phone. Make sure that your device is running on Stock ROM without root or mods. If you are rooted, then you have to unroot it to receive the official OTA or else you can follow the below step by step guide to flash the BLL-L21C10B378 firmware on Huawei GR5 2017.

To check for the OTA, Go to Settings –>  About Phone —> System update

This way you can check if you have any OTA update on your Huawei GR5 2017. In case if you find the Huawei GR5 2017 B378 Nougat Firmware build, then you can hit the download button to install the update on your phone.


Before installing any update, make sure you have enough battery backup with at least 50% left. To download the OTA update, your phone must be running a stable WiFi or Data connection.

Recommended: Take Full Backup of any installation or upgrade.

If you still not received the OTA then don’t worry. You can now upgrade your phone to latest build manually using the file given below. yes! This guide will help you to install Huawei GR5 2017 B378 Nougat Firmware. The update is simple and easy. Make sure you read and follow the steps properly.

GetDroidTips is not responsible for any kind of damage occurred to your device during installation. Do it at your own risk.

Official Firmware Details :

  • Device: Huawei GR5 2017
  • Model No: BLL-L21
  • Android OS: 7.0
  • EMUI Version: 5.1
  • Firmware: B378
  • Build Number: BLL-L21C10B378
  • Region: Russia
  • Status: Official
  • Type: Full firmware image
  • Size : 1.7 GB

Huawei GR5 2017 B378 Nougat Firmware Changelog:

  • Integrates Google security patches released in April 2018 for improved system security.


BLL-L21C10B378 – Russia



Download Data File

Steps to Install Huawei GR5 2017 2017 B378 Nougat Firmware

Before following the below guide on how to install firmware on Huawei GR5 2017, you need to follow certain requirements. Download the required files before flashing the firmware on your phone.



GetDroidTips will not be responsible for bricking or damage to your device


Full Guide To Install Firmware On Huawei GR5 2017 2017

Still not able to update? then you can flash the latest update using this guide: Download Firmware for Huawei Devices with Huawei Firmware Finder

Some Useful Tips and Tricks:

I hope you have successfully flashed the Huawei GR5 2017 B378 Nougat Firmware using this guide. If any queries or feedback, please leave a comment.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.