Huawei GR3 TAG-L21 Firmware Flash File

Huawei GR3 TAG-L21 Firmware Flash File/Stock ROM Huawei GR3 TAG-L21

How To ROM install Huawei GR3 TAG-L21

Download Firmware For your Huawei GR3 TAG-L21
Prepare an SD card, it is recommended to use Sandisk, Kingstone, or Kingmax, size is recommended that more than 1G.
Formatting SD card (optional).
copy a large package path UPDATA.APP to the SD card dload UPDATA.APP.
Check the root directory of the SD card you dload UPDATA.APP for Huawei GR3 TAG-L21.
Step 5: SD card into the phone is switched on in the main screen, press the Menu key, the system updates -> SD card upgrade -> confirm -> upgrade, backup data, select the backup data; upgrade.
Step Six: The update process progress bar shows, after the finish of the pending progress bar, the phone automatically restart.
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Step one: Prepare an SD card, it is recommended to use Sandisk, Kingstone, or Kingmax, size is recommended that more than 4G.
Formatting SD card (optional).
The step three: copy a large package path UPDATA.APP to the SD card dload UPDATA.APP.
Step four: Check the root directory of the SD card you dload UPDATA.APP.
Step Four: cell phone turned off, insert the SD card while pressing the volume up button + volume down key switch button, the phone automatically enters the upgrade mode, and then begin the upgrade in Figure
Step Five: After the progress bar to go full fixed, the phone will automatically restart If you do not manually remove the battery.
After flashing process starts, it might take up to 5-10 minutes. So keep patience and wait
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