How to Flash Huawei GR3 Stock Firmware – All Firmwares

If you own a Huawei device and want to flash or upgrade your device then here we demonstrate to you how to flash Huawei GR3 firmware on your smartphone. Or if you are here to repair your Huawei GR3 if it stuck on the Huawei boot logo or Boot Screen, Stuck on the boot loop… or for any reason, you don’t receive an OTA update.

Huawei GR3 released in 2012. It’s powered by Octa-core 1.5 GHz MediaTek MT6753T chipset, Huawei P30 has 2 GB RAM and 16GB of ROM. Huawei GR3 also comes with a dual CAMERA setup: 5mp in back & 13mp in front camera.

Huawei GR3 comes with a 5.00-inch IPS LCD with a resolution of 720 x 1280pixels and runs on EMUI 3.1 based on Android 5.1.1 and it also comes in 3 Colors (Midnight Black, Sapphire Blue, Amber Brown). This device Powered by a Non-removable 2200 mAh battery.


  • Download Stock Firmware from below.
  • Install Huawei USB driver on your PC.
  • Make Sure: Flashing the right firmware flash file. is not responsible for any damage, try at your own risk.

Download Huawei GR3 Firmware Flash File

On our page, we share with you all versions of Huawei GR3 Firmware. Stock Firmware flash file comes with a zip file so you need to download 7zip or WinRAR to extract this zip file.

Don’t try this firmware flash file with your any other Huawei or honor devices. This firmware only supports for the same model of Huawei devices only. We share here all the official files published by the company.

Build Number Android OS Download
TAG-L21_C328B128_Middle_East_Africa 5.1.1 FullOTA
TAG-L21_C479B132_Russian Federation_Central Asia & Caucasia 5.1.1 FullOTA
TAG-L21C328B136 5.1.1 FullOTA
TAG-L21 C440B141 Portugal Spain Netherlands Germany Switzerland 5.1.1 FullOTA
TAG-L21 C699B104 Firmware Poland 5.1.1 FullOTA
TAG-L21 C440B139 West European 5.1.1 FullOTA
GR3 TAG-L21 C328B128 Middle East Africa 5.1.1 FullOTA
TAG-L13 2016-10-12 5.1.1 5.1.1 FullOTA
TAG-L21 5.1 B128 5.1.1 FullOTA
TAG-L21 B126 5.1.1 FullOTA
TAG-L21 5.1 B125 5.1.1 FullOTA
TAG-L21 5.1 B127a 5.1.1 FullOTA
TAG-L21 2017-05-23 5.1.1 FullOTA
TAG-L21 B126 5.1.1 FullOTA
TAG-L21 2016-04-18 5.1.1 FullOTA
TAG-L21 5.1 B127a 5.1.1 FullOTA
TAG-L22 5.1.1 FullOTA
TAG-L22 5.1.1 FullOTA
TAG-L22 B128b 5.1.1 FullOTA
TAG-L22 B128i 5.1.1 FullOTA
TAG-L22 5.1 B128b 5.1.1 FullOTA
TAG-L22 5.1 B128i 5.1.1 FullOTA
TAG-L32 2016-12-08 B115 5.1.1 OTA
TAG-L32 2016-10-28 B113 5.1.1 OTA
TAG-L23 2016-10-25 B136 5.1.1 OTA
TAG-L23 2016-12-16 B103 5.1.1 OTA
TAG-L13 2016-12-17 B101 5.1.1 OTA
TAG-L21 2017-04-10 B134 5.1.1 OTA
TAG-L21 2017-03-30 B133 5.1.1 OTA
TAG-L22 2016-12-08 B140 5.1.1 OTA


How to take Backup Huawei GR3

Before flashing Huawei GR3 Firmware, it’s important to take backup your all personal data include contacts, photos, videos, messages, and important notes.

  • Open the backup app from the device home screen menu.

backup data honor

  • After that, tap on the backup button and then choose the location where you want to save your backup file.
  • Now you want to choose which file you need to backup (It totally depending on you) (Choose- Massages, Calls logs, Contacts, Music, Videos).
  • After that, touch on the backup button to take the backup of your data.
  • Then set a password, (you can also skip this step if you don’t want).
  • After completed then tap on next to begin the backup.

Restore Huawei GR3

  • Open the backup app once again.
  • Then tap on the restore button.
  • Now choose the source of the data where you want to restore and tap on next.

restore data huawei honor for flash file

  • Then enter your backup data password and tap on OK.
  • After that, select the data which one you want to restore and then touch on start on restoration (Massages, Calls, Music, Videos and other).
  • Finally, tap on ok to finish.

How to Flash Huawei GR3

To flash your device you need to follow some pre-requirements, so below to know all the pre-requirements files and follow them to flash your device successfully.

Flashing requirements:

  • At least 50% of battery charge.
  • SD card 8GB or more.
  • Make sure: your device bootloader is already Unlock.
  • Right Huawei P30 flash file for your device: Firmware

Flashing Instructions:

  • First, download the stock firmware on your pc.
  • Then extract the stock firmware and open the extracted folder.

huawei Honor firmware Flash file download

  • After that, insert the Micro SD card to your pc.

copy firmware flash file Huawei Honor

  • Now make a new folder and change the name to dload.
  • Copy the UPDATE.APP file and paste the file to your Micro SD card dload folder.

Huawei / Honor Firmware Update with Flash File ROM

  • Now insert the micro SD card to your Huawei phone.
  • Then open the Settings app and then > System > System Update.

Huawei system update with huawei Flash file Firmware

  • After that, tap on the “3 dots” at the top right corner and then tap on Local update.
  • Then select the UPDATE.APP file that you copied earlier to your SD card.
  • Now your Huawei device update will begin.
  • Once completed then check Huawei GR3 flash file successfully flashing.

Also, we have 4 other methods for flashing your device. you can check out: How to flash Huawei firmware

Conclusion of Flash Huawei GR3 Firmware

Well, here we have shared how to flash Huawei GR3 Stock Firmware on your PC. However, if you facing any error while downloading all the files you can let us know in the comment section.

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Me DB Rana, a Passionate person about Android who loves to write about Android OS, Features, and Technology. In my free time, I love to play games.

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