Download And Install B134 Stock Firmware On Huawei GR3 TAG-L21

Huawei GR3 TAG-L21 has received an OTA update. This new update comes with build number B134 for Huawei GR3. Now install B134 Stock Firmware On Huawei GR3 TAG-L21. According to official update log, this update improves system performance and stability. Please update your device for a better user experience. This update comes with software version TAG-L21C328B134 and packed with improvment in system performance and stability, Improved system security and comes with latest Android Security Patch Update. It also Fixed various compatibility issues in this new updated OTA build B134.

Download And Install B134 Stock Firmware On Huawei GR3 TAG-L21

Download the B134 Stock Firmware On Huawei GR3 TAG-L21 and you can install the Stock firmware on Huawei GR3 manually by following this step below. If you are waiting for the official OTA update of B134, then you need to be on Stock Firmware on your phone. You can either wait for OTA to receive on your phone or you can manually check for the OTA notification update : Go to Settings –> About Phone –> System Updates and check for the latest OTA update on Huawei GR3 TAG-L21. 

If you can’t wait for the OTA, then you can follow our guide on How to Install B134 Stock Firmware On Huawei GR3 TAG-L21.


  1. This Update is only for Huawei GR3 users.
  2. Please make sure there is sufficient free space in your phone\’s internal storage or SD card.
  3. Before the update, make sure your phone has not been rooted and has sufficient storage space.
  4. is not responsible for any damage to your phone while installing this Update.
  5. Make sure that you have latest USB drivers installed
  6. Take complete backup of your phone and then proceed.

Official Firmware Details :

  • Device : Huawei GR3
  • Model No : TAG-L21
  • Firmware : B134
  • Build Number : TAG-L21C328B134
  • Region :
  • Status : Official
  • Type : OTA firmware file


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How to Install B134 Stock Firmware On Huawei GR3

Method 1

  • First of all, Download the OTA file from above link and move it to your SD Card/Internal memory
  • Now Extract the Downloaded OTA zip file on your SD Card
  • Look for the folder called “dload” in your SD Card root. if you don’t have Create a folder called dload in the root directory and move the file in dload folder.
  • In your phone, dial *#*#2846579#*#* from phone dialer to open the hidden menu.
  • Navigate the option Project Menu –> Software Upgrade –> SDCard.
  • Now select the and Run update.
  • Wait untill the installation process completes.
  • Once the installation process is completed, you can reboot your Huawei GR3
  • That’s it ! You have Installed the latest version of B134 build on Huawei GR3.

Method 2

  • Download the OTA zip from above
  • Extract the Downloaded ZIP file
  • Create a folder called dload in the root directory and move the update.App file in dload folder.
  • Now turn your phone off and Press “Volume Up + Volume Down and Power Button” simultaneously. The Update installation starts automatically.
  • Wait until update installation completes.
  • Done

Let us know your feedback on this latest update In the comment section below.

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