introduction:


There are two methods to upgrade: normal upgrade and force upgrade.
Normal upgrade needs to start the handset and enter the setting module.
Force upgrade is often used when the handset can’t boot up or can’t enter the idle screen.

Normal upgrade (only for EMUI 3.X) 

  1. A MICRO SD card of 4GB or more should be available.
  2. Format the MICRO SD card (This operation is optional).
  3. Copy the main firmware file (dload/UPDATE.APP) to the /dload folder of the MICRO SD card.
  4. Insert the Micro SD card into the handset and power on.
  5. After entering the home screen, press menu key to choose Settings->Updater->Menu->Local upgrade->Confirm->Upgrade to start the upgrade.
  6. The phone will reboot in firmware download mode...
  7. When the progress bar stop, the phone will restart.
  8. Now the Upgrade will be finished.

Normal upgrade (for EMUI 3.X and EMUI4.X)

  1. A MICRO SD card of 4GB or more should be available.
  2. Format the MICRO SD card (This operation is optional).
  3. Copy the main firmware file (dload/UPDATE.APP) to the /dload folder of the MICRO SD card.
  4. Insert the Micro SD card into the handset and power on.
  5. After entering call -> enter:*#*#2846579#*#* -> Software Upgrade -> SDCard Upgrade-> OK
  6. When the progress bar stop, the phone will restart.
  7. Reset your phone.
  8. Now the Upgrade will be finished.

Force upgrade

  1. A MICRO SD card of 4GB or more should be available.
  2. Format the MICRO SD card (This operation is optional).
  3. Copy the main firmware file (dload/UPDATE.APP) to the /dload folder of the MICRO SD card.
  4. Make sure your handset is in power off status. Insert the MICRO SD card into the handset.
  5. Press both VOLUME DOWN key and VOLUME UP key, and then press the POWER key to power on the phone and enter the software upgrade mode.
  6. When the progress bar stop, the phone will restart.
  7. Now the Upgrade will be finished.

Check the version!!!

By Settings -> About phone -> Build number, to check the version.
If the Build show the string "balong" instead your Model number, you cannot download future OTA updates, but the device is fully functional...

You can restore this error, re-installing the old full firmware updated environment, and repeating the whole upgrade procedure described previously.

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